Legacy BS 3643 Metric Thread Limits of Size (6g / 6H Full Ladder)

The legacy BS 3643 limits-of-size ladder, M1.6 through M300 across coarse and fine pitches: external 6g and internal 6H major, pitch and minor diameter max/min limits per size-pitch pair — the complete tolerance-of-size ladder behind general-purpose metric threads, carried verbatim with its mid-table header repeat.

Last updated: 2026-11

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Legacy BS 3643 Metric Thread Limits of Size (6g / 6H Full Ladder) in an industrial setting
Illustrative image redrawn from real product references — not a photograph of stocked items.

Specifications

This is the master ladder behind every metric thread limit on this site: per size-pitch pair, the external (bolt) thread in class 6g and the internal (nut) thread in class 6H, each with major, pitch and minor diameter max and min in the source's decimal-comma notation. The ladder runs from M1,6 x 0,35 at the bottom through M300 x 4 and x 3 at the top — 440 size-pitch pairs covering the fine, coarse and extra-fine selections side by side per size (M1,6 prints three pitch options; M48 and up print two or three each). Reading it: for an external thread, major max/min are the bolt OD limits (M10 x 1,5: 9,968 / 9,732), pitch dia limits control the fit (8,994 / 8,862), and minor/root d3 sets the thread depth for strength checks; the internal columns mirror it for the nut (M10 x 1,5: D1 8,376 / 8,682 min/max as printed). The source page repeats its header block mid-table where the ladder restarts — carried verbatim and flagged, with the position marked. For tolerance-class selections other than 6g/6H, and for the modern-edition tabulation, see the ISO 965 tolerance-classes reference in this family; for the basic (no-tolerance) dims, see the ISO 724 page. Thread strength and torque are not tabulated — per RFQ.

Coverage M1,6 - M300, ~440 size-pitch pairs: fine, coarse and extra-fine selections per size as the source prints them
External 6g columns Major Dia d max/min, Pitch Dia d2 max/min, Minor Dia d3 max/min, per size-pitch pair
Internal 6H columns Minor Dia D1 min/max, Pitch Dia D2 min/max, Major Dia D max/min, per pair
Notation mm, decimal commas; "-" cells mark values the source does not tabulate; mid-table header repeat carried verbatim (flagged)
Companions ISO 724 basic dims and ISO 965 tolerance classes — both in this family
Not tabulated Classes other than 6g/6H, thread strength, torque, materials — per RFQ
Thread symbol legendAs printed on the collected page: BS 3643 limits of size in mm, decimal-comma notation carried verbatim; three-row group header carried as the table header plus leading flag rows; "-" cells mark values the source does not tabulate. Verification: token-for-token equal to the x127 corpus (live-DOM capture 2026-11-01).
SymbolDescription
dMajor diameter of external thread
d 2Pitch diameter of external thread
d 3Minor/root diameter in the legacy external-thread table
DMajor diameter of internal thread
D 2Pitch diameter of internal thread
D 1Minor diameter of internal thread
PThread pitch
BS 3643 / ISO 965 limits of size — external 6g and internal 6H classes, full ladderAs printed on the collected page: BS 3643 limits of size in mm, decimal-comma notation carried verbatim; three-row group header carried as the table header plus leading flag rows; "-" cells mark values the source does not tabulate. Verification: token-for-token equal to the x127 corpus (live-DOM capture 2026-11-01).
External (bolt thread)- 6g ClassInternal (nut thread)- 6H Class
Size mmPitch mmMajor Dia d = D mmPitch Dia d 2 = D 2 mm.Minor Dia d 3 mmMinor Dia D 1 mmPitch Dia D 2 = d 2 mm.Major Dia D = d mmTap Drill
maxminmaxminmaxminminmaxminmaxminNote **
1,60,35-1,5811,4961,3541,2911,2021,075-1,2211,3211,3731,4581,600-1,250
1,60,3-1,5821,5071,3871,3421,2571,157-1,2751,3601,4051,4651,600-1,300
1,60,2-1,5831,5271,4531,4031,3661,280-1,3831,4581,4701,5371,600-1,400
1,70,35-1,6811,5961,4541,3911,3021,175-1,3211,4211,4731,5581,700-1,350
1,80,35-1,7811,6961,5541,4911,4021,275-1,4211,5211,5731,6581,800-1,450
1,80,2-1,7831,7271,6531,6031,5661,480-1,5831,6581,6701,7371,800-1,600
20,4-1,9811,8861,7211,6541,5481,408-1,5671,6791,7401,8302,000-1,600
20,25-1,9821,9151,8201,7641,7111,610-1,7291,8091,8381,9132,000-1,750
2,20,45-2,1802,0801,8881,8171,6931,540-1,7131,8381,9082,0032,200-1,750
2,20,25-2,1822,1152,0201,9641,9111,810-1,9292,0092,0382,1132,200-1,950
2,30,45-2,2802,1801,9881,9171,7931,640-1,8131,9382,0082,1032,300-1,850
2,30,4-2,2812,1862,0211,9541,8481,708-1,8671,9792,0402,1302,300-1,900
2,50,45-2,4802,3802,1882,1171,9931,840-2,0132,1382,2082,3032,500-2,050
2,50,35-2,4812,3962,2542,1912,1021,975-2,1212,2212,2732,3582,500-2,150
2,60,45-2,5802,4802,2882,2172,0931,940-2,1132,2382,3082,3932,600-2,150
30,5-2,9802,8742,6552,5802,4392,272-2,4592,5992,6752,7753,000-2,500
30,35-2,9812,8962,7542,6872,6022,471-2,6212,7212,7732,8633,000-2,650
3,50,6-3,4793,3543,0893,0042,8292,635-2,8503,0103,1103,2223,500-2,900
3,50,35-3,4813,3963,2543,1873,1022,971-3,1213,2213,2733,3633,500-3,150
40,7-3,9783,8383,5233,4333,2203,002-3,2423,4223,5453,6634,000-3,300
40,5-3,9803,8743,6553,5803,4393,272-3,4593,5993,6753,7754,000-3,300
4,50,75-4,4784,3383,9913,9013,6663,439-3,6883,8784,0134,1314,500-3,750
4,50,5-4,4804,3744,1554,0803,9393,772-3,9594,0994,1754,2754,500-4,000
50,8-4,9764,8264,4564,3614,1103,869-4,1344,3344,4804,6055,000-4,200
50,5-4,9804,8744,6554,5804,4394,272-4,4594,5994,6754,7755,000-4,500
5,50,5-5,4805,3745,1555,0654,9394,757-4,9595,0995,1755,2955,500-5,000
61-5,9745,7945,3245,2124,8914,596-4,9175,1535,3505,5006,000-5,000
60,8-5,9765,8265,4565,3765,1104,884-5,1345,3345,4805,5866,000-4,200
60,75-5,9785,8385,4915,3915,1664,929-5,1885,3785,5135,6456,000-5,000
60,7-5,9785,8385,5235,4285,2204,997-5,2425,4225,5455,6716,000-5,300
60,5-5,9805,8745,6555,5705,4395,262-5,4595,5995,6755,7876,000-5,500
71-6,9746,7946,3246,2125,8915,596-5,9176,1536,3506,5007,000-6,000
70,75-6,9786,8386,4916,3916,1665,929-6,1886,3786,5136,6457,000-6,250
70,5-6,9806,8746,6556,5706,4396,262-6,4596,5996,6756,7877,000-6,500
81,25-7,9727,7607,1607,0426,6196,272-6,6476,9127,1887,3488,000-6,750
81-7,9747,7947,3247,2126,8916,596-6,9177,1537,3507,5008,000-7,000
80,8-7,9767,8267,4567,3507,1106,858-7,1347,3347,4807,6208,000-7,200
80,75-7,9787,8387,4917,3917,1666,929-7,1887,3787,5137,6458,000-7,250
80,5-7,9807,8747,6557,5707,4397,262-7,4597,5997,6757,7878,000-7,500
91,25-8,9728,7608,1608,0427,6197,272-7,6477,9128,1888,3489,000-7,750
91-8,9748,7948,3248,2127,8917,596-7,9178,1538,3508,4989,000-8,000
90,75-8,9788,8388,4918,3918,1667,929-8,1888,3788,5138,6459,000-8,250
90,5-8,9808,8748,6558,5708,4398,262-8,4598,5998,6758,7879,000-8,500
101,5-9,9689,7328,9948,8628,3447,938-8,3768,6769,026-10,000-8,500
101,25-9,9729,7609,1609,0428,6198,272-8,6478,9129,1889,34810,000-8,750
101-9,9749,7949,3249,2128,8918,596-8,9179,1539,3509,50010,000-9,000
100,75-9,9789,8389,4919,3919,1668,929-9,1889,3789,5139,64510,000-9,250
100,5-9,9809,8749,6559,5709,4399,262-9,4599,5999,6759,78710,000-9,500
111,5-10,96810,7329,9949,8629,3448,938-9,3769,67610,02610,19611,000-9,500
111-10,97410,79410,32410,2129,8919,596-9,91710,15310,35010,50011,000-10,000
110,75-10,97810,83810,49110,39110,1669,929-10,18810,37810,51310,64511,000-10,250
110,5-10,98010,87410,65510,57010,43910,262-10,45910,59910,67510,78711,000-10,500
121,75-11,96611,70110,82910,67910,0729,601-10,10610,44110,86311,06312,000-10,250
121,5-11,96811,73210,99410,85410,3449,930-10,37610,67611,02611,21612,000-10,500
121,25-11,97211,76011,16011,02810,61910,258-10,64710,91211,18811,36812,000-10,750
121-11,97411,79411,32411,20610,89110,590-10,91711,15311,35011,51012,000-11,000
120,75-11,97811,83811,49111,38511,16610,923-11,18811,37811,51311,65312,000-11,250
120,5-11,98011,87411,65511,56511,43911,257-11,45911,59911,67511,79512,000-11,500
142-13,96213,68212,66312,50311,79711,271-11,83512,21012,70112,91314,000-12,000
141,5-13,96813,73212,99412,85412,34411,930-12,37612,67613,02613,21614,000-12,500
141,25-13,97213,76013,16013,02812,61912,258-12,64712,91213,18813,35814,000-12,750
141-13,97413,79413,32413,20612,89112,590-12,91713,15313,35013,51014,000-13,000
140,75-13,97813,83813,49113,38513,16612,923-13,18813,37813,51313,65314,000-13,250
140,5-13,98013,87413,65513,56513,43913,257-13,45913,59913,67513,79514,000-13,500
151,5-14,96814,73213,99413,85413,34412,930-13,37613,67614,02614,21615,000-13,500
151-14,97414.79414,32414,20613,89113,590-13,91714,15314,35014,51015,000-14,000
162-15.96215.68214.66314.50313.79713.271-13.83514.21014.70114.91316.000-14.000
161.6-15.96815.75614.92914.82414.23613.838-14.26814.56814.96115.10116.000-14.400
161.5-15.96815.73214.99414.85414.34413.930-14.37614.67615.02615.21616.000-14.500
161.25-15.97215.76015.16015.02814.61914.258-14.64714.91215.18815.35816.000-14.750
161-15.97415.79415.32415.20614.89114.590-14.91715.15315.35015.51016.000-15.000
160.75-15.97815.83815.49115.38515.16614.923-15.18815.37815.51315.65316.000-15.250
160.5-15.98015.87415.65515.56515.43915.257-15.45915.59915.67515.79516.000-15.500
171,5-16,96816,73215,99415,85415,34414,930-15,37615,67616,02616,21617,000=15,500
171-16,97416,79416,32416,20615,89115,590-15,91716,15316,35016,51017,000-16,000
182,5-17,95817,62316,33416,16415,25214,624-15,29415,74416,37616,60118,000-15,500
182-17,96217,68216,66316,50315,79715,271-15,83516,21016,70116,91318,000-16,000
181,5-17,96817,73216,99416,85416,34415,930-16,37616,67617,02617,21618,000-16,500
181,25-17,97217,76017,16017,02816,61916,258-16,64716,91217,18817,35818,000-16,750
181-17,97417,79417,32417,20616,89116,590-16,91717,15317,35017,51018,000-17,000
180,75-17,97817,83817,49117,38517,16616,923-17,18817,37817,51317,65318,000-17,250
180,5-17,98017,87417,65517,56517,43917,257-17,45917,59917,67517,79518,000-17,500
202,5-19,95819,62318,33418,16417,25216,624-17,29417,74418,37618,60020,000-17,500
202-19,96219,68218,66318,50317,79717,271-17,83518,21018,70118,91320,000-18,000
201,5-19,96819,73218,99418,85418,34417,930-18,37618,67619,02619,21620,000-18,500
201-19,97419,79419,32419,20618,89118,590-18,91719,15319,35019,51020,000-19,000
200,75-19,97819,83819,49119,38519,16618,923-19,18819,37819,51319,65320,000-19,250
200,5-19,98019,87419,65519,56519,43919,257-19,45919,59919,67519,79520,000-19,500
223-21,95221,57720,00319,81818,70417,970-18,75219,25220,05120,29622,000-19,000
222,5-21,95821,62320,33420,16419,25218,624-19,29419,74420,37620,60022,000-19,500
222-21,96221,68220,66320,50319,79719,271-19,83520,21020,70120,91322,000-20,000
221,5-21,96821,73220,99420,85420,34419,930-20,37620,67621,02621,21622,000-20,500
221-21,97421,79421,32421,20620,89120,590-20,91721,15321,35021,51022,000-21,000
220,75-21,97821,83821,49121,38521,16620,923-21,18821,37821,51321,65322,000-21,250
220,5-21,98021,87421,65521,56521,43921,257-21,45921,59921,67521,79522,000=21,500
243-23,95223,57722,00321,80320,70419,955-20,75221,25222,05122,31624,000-21,000
242,5-23,95823,62322,33422,14421,25220,604-21,29421,74422,37622,62624,000-21,500
242-23,96223,68222,66322,49321,79721,261-21,83522,21022,70122,92524,000-22,000
241,5-23,96823,73222,99422,84422,34421,920-22,37622,67623,02623,22624,000-22,500
241-23,97423,79423,32423,19922,89122,583-22,91723,15323,35023,52024,000-23,000
240,75-23,97823,83823,49123,37923,16622,917-23,18823,37823,51323,66324,000-23,250
252-24,96224,68223,66323,49322,79722,261-22,83523,21023,70123,92525,000-23,000
251,5-24,96824,73223,99423,84423,34422,920-23,37623,67624,02624,22625,000-23,500
251-24,97424,79424,32424,19923,89123,583-23,91724,15324,35024,52025,000-24,000
261,5-25,96825,73224,99424,84424,34423,920-24,37624,67625,02625,22626,000-24,500
273-26,95226,57725,00324,80323,70422,955-23,75224,25225,05125,31627,000-24,000
272-26,96226,68225,66325,49324,79724,261-24,83525,21025,70125,92527,000-25,000
271,5-26,96826,73225,99425,84425,34424,920-25,37625,67626,02626,22627,000-25,500
271-26,97426,79426,32426,19925,89125,583-25,91726,15326,35026,52027,000-26,000
270,75-26,97826,83826,49126,37926,16625,917-26,18826,37826,51326,66327,000-26,250
282-27,96227,68226,66326,49325,79725,261-25,83526,21026,70126,92528,000-26,000
281,5-27,96827,73226,99426,84426,34425,920-26,37626,67627,02627,22628,000-26,500
281-27,97427,79427,32427,19926,89126,583-26,91727,15327,35027,52028,000-27,000
303,5-29,94729,52227,67427,46226,15825,306-26,21126,77127,72728,00730,000-26,500
303-29,95229,57728,00327,80326,70425,955-26,75227,25228,05128,31630,000-27,000
302,5-29,95829,62328,33428,14427,25226,604-27,29427,74428,37628,62630,000-27,500
302-29,96229,68228,66328,49327,79727,261-27,83528,21028,70128,92530,000-28,000
301,5-29,96829,73228,99428,84428,34427,920-28,37628,67629,02629,22630,000-28,500
301-29,97429,79429,32429,19928,89128,583-28,91729,15329,35029,52030,000-29,000
300,75-29,97829,83829,49129,37929,16628,917-29,18829,37829,51329,66330,000-29,250
322-31,96231,68230,66330,49329,79729,261-29,83530,21030,70130,92532,000-30,000
321,5-31,96831,73230,99430,84430,34429,920-30,37630,67631,02631,22632,000-30,500
333,5-32,96832,54330,69530,48329,17928,327-29,21129,77130,72731,00733,000-29,500
333-32,95232,57731,00330,80329,70428,955-29,75230,25231,05131,31633,000-30,000
332-32,96232,68231,66331,49330,79730,261-30,83531,21031,70131,92533,000-31,000
331,5-32,96832,73231,99431,84431,34430,920-31,37631,67632,02632,22633,000-31,500
331-32,97432,79432,32432,19931,89131,583-31,91732,15332,35032,52033,000-32,000
330,75-32,97832,83832,49132,37932,16631,917-32,18832,37832,51332,66333,000-31,250
351,5-34,96834,73233,99433,84433,34433,920-33,37633,67634,02634,22635,000-33,500
364-35,94035,46533,34233,11831,61030,654-31,67032,27033,40233,70236,000-32,000
363-35,95235,57734,00333,80332,70431,955-32,75233,25234,05134,31636,000-33,000
362-35,96235,68234,66334,49333,79733,261-33,83534,21034,70134,92536,000-34,000
361,5-35,96835,73234,99434,84434,34433,920-34,37634,67635,02635,22636,000-34,500
361-35,97435,79435,32435,19934,89134,583-34,91735,15335,35035,52036,000-35,000
381,5-37,96837,73236,99436,84436,34435,920-36,37636,67637,02637,22638,000-36,500
394-38,94038,46536,34236,11834,61033,654-34,67035,27036,40236,70239,000-35,000
393-38,95238,57737,00336,80335,70434,955-35,75236,25237,05137,31639,000-36,000
392-38,96238,68237,66337,49336,79736,261-36,83537,21037,70137,92539,000-37,000
391,5-38,96838,73237,99437,84437,34436,920-37,37637,67638,02638,22639,000-37,500
391-38,97438,79438,32438,19937,89137,583-37,91738,15338,35038,52039,000-38,000
403-39,95239,57738,00337,80336,70435,955-36,75237,25238,05138,31640,000-37,000
402,5-39,95839,62338,33438,14437,25236,604-37,29437,74438,37638,62640,000-37,500
402-39,96239,68238,66338,49337,79737,261-37,83538,21038,70138,92540,000-38,000
401,5-39,96839,73238,99438,84438,34437,920-38,37638,67639,02639,22640,000-38,500
424,5-41,93741,43739,01438,77837,06636,006-37,12937,79939,07739,39242,000-37,500
424-41,94041,46539,34239,11837,61036,654-37,67038,27039,40239,70242,000-38,000
423-41,95241,57740,00339,80338,70437,955-38,75239,25240,05140,31642,000-39,000
422-41,96241,68240,66340,49339,79739,261-39,83540,21040,70140,92542,000-40,000
421,5-41,96841,73240,99440,84440,34439,920-40,37640,67641,02641,22642,000-40,500
421-41,97441,79441,32441,19940,89140,583-40,91741,15341,35041,52042,000-41,000
454,5-44,93744,43742,01441,77840,06639,006-40,12940,79942,07742,39245,000-41,500
454-44,94044,46542,34242,11840,61039,654-40,67041,27042,40242,70245,000-41,000
453-44,95244,57743,00342,80341,70440,955-41,75242,25243,05143,31645,000-42,000
452-44,96244,68243,66343,49342,79742,261-42,83543,21043,70143,92545,000-43,000
451,5-44,96844,73243,99443,84443,34442,920-43,37643,67644,02644,22645,000-43,500
451-44,97444,79444,32444,19943,89143,583-43,91744,15344,35044,52045,000-44,000
485-47,92947,39944,68144,43142,51641,351-42,58743,29744,75245,08748,000-43,000
484-47,94047,46545,34245,10643,61042,642-43,67044,27045,40245,71748,000-44,000
483-47,95247,57746,00345,79144,70443,943-44,75245,25246,05146,33148,000-45,000
482-47,96247,68246,66346,48345,79745,251-45,83546,21046,70146,93748,000-46,000
481,5-47,96847,73246,99446,83446,34445,910-46,37646,67647,02647,23848,000-46,500
504-49,94049,46547,34247,10645,61044,642-45,67046,27047,40247,71750,000-46,000
503-49,95249,57748,00347,79146,70445,943-46,75247,25248,05148,33150,000-47,000
502-49,96249,68248,66348,48347,79747,251-47,83548,21048,70148,93750,000-48,000
501,5-49,96849,73248,99448,83448,34447,910-48,37648,67649,02649,23850,000-48,500
525-51,92951,39948,68148,44546,51645,365-46,58747,29748,75249,06752,000-47,000
524-51,94051,46549,34249,10647,61046,642-47,67048,27049,40249,71752,000-48,000
523-51,95251,57750,00349,79148,70447,943-48,75249,25250,05150,33152,000-49,000
522-51,96251,68250,66350,48349,79749,251-49,83550,21050,70150,93752,000-50,000
521,5-51,96851,73250,99450,83450,34449,910-50,37650,67651,02651,23852,000-50,500
554-54,94054,46552,34252,10650,61049,642-50,67051,27052,40252,71755,000-51,000
553-54,95254,57753,00352,79151,70450,943-51,75252,25253,05153,33155,000-52,000
552-54,96254,68253,66353,48352,79752,251-52,83553,21053,70153,93755,000-53,000
551,5-54,96854,73253,99453,83453,34452,910-53,37653,67654,02654,23855,000-53,500
566,5-55,91555,28551,69351,39348,87947,389-48,96449,81451,77852,17856,000-49,500
565,5-55,92555,36552,35352,08849,97148,700-50,04650,79652,42852,78356,000-50,500
564-55,94055,46553,34253,10651,61050,642-51,67052,27053,40253,71756,000-52,000
563-55,95255,57754,00353,79152,70451,943-52,75253,25254,05154,33156,000-53,000
562-55,96255,68254,66354,48353,79753,251-53,83554,21054,70154,93756,000-54,000
561,5-55,96855,73254,99454,83454,34453,910-54,37654,67655,02655,23856,000-54,500
561-55,97455,79455,32455,18454,89154,568-54,91755,15355,35055,54056,000-55,000
584-57,94057,46555,34255,10653,61052,642-53,67054,27055,40255,71758,000-54,000
583-57,95257,57756,00355,79154,70453,943-54,75255,25256,05156,33158,000-55,000
582-57,96257,68256,66356,48355,79755,251-55,83556,21056,70156,93758,000-56,000
581,5-57,96857,73256,99456,83456,34455,910-56,37656,67657,02657,23858,000-56,500
605,5-59,92559,36556,35356,08853,97152,700-54,04654,79656,42856,78360,000-54,500
604-59,94059,46557,34257,10655,61054,642-55,67056,27057,40257,71760,000-54,000
603-59,95259,57758,00357,79156,70455,943-56,75257,25258,05158,33160,000-57,000
602-59,96259,68258,66358,48357,79757,251-57,83558,21058,70158,93760,000-58,000
601,5-59,96859,73258,99458,83458,34457,910-58,37658,67659,02659,23860,000-58,500
601-59,97459,79459,32459,18458,89158,568-58,91759,15359,35059,54060,000-59,000
624-61,94061,46559,34259,10657,61056,642-57,67058,27059,40259,71762,000-58,000
623-61,95261,57760,00359,79158,70457,943-58,75259,25260,05160,33162,000-59,000
622-61,96261,68260,66360,48359,79759,251-59,83560,21060,70160,93762,000-60,000
621,5-61,96861,73260,99460,83460,34459,910-60,37660,67661,02661,23862,000-60,500
631,5-62,96862,73261,99461,83461,34460,910-61,37661,67662,02662,23863,000-61,500
646-63,92063,32060,02359,74357,42556,047-57,50558,30560,10360,47864,000-58,000
645,5-63,92563,36560,35360,08857,97156,700-58,04658,79660,42860,78364,000-58,500
644-63,94063,46561,34261,10659,61058,642-59,67060,27061,40261,71764,000-60,000
643-63,95263,57762,00361,79160,70459,943-60,75261,25262,05162,33164,000-61,000
642-63,96263,68262,66362,48361,79761,251-61,83562,21062,70162,93764,000-62,000
641,5-63,96863,73262,99462,83462,34461,910-62,37662,67663,02663,23864,000-62,500
641-63,97463,79463,32463,18462,89162,568-62,91763,15363,35063,54064,000-63,000
654-64,94064,46562,34262,10660,61059,642-60,67061,27062,40262,71765,000-61,000
653-64,95264,57763,00362,79161,70460,943-61,75262,25263,05163,33165,000-62,000
652-64,96264,68263,66363,48362,79762,251-62,83563,21063,70163,93765,000-63,000
651,5-64,96864,73263,99463,83463,34462,910-63,37663,67664,02664,23865,000-63,500
686-67,92067,32064,02363,74361,42560,047-61,50562,30564,10364,47868,000-62,000
684-67,94067,46565,34265,10663,61062,642-63,67064,27065,40265,71768,000-64,000
683-67,95267,57766,00365,79164,70463,943-64,75265,25266,05166,33168,000-65,000
682-67,96267,68266,66366,48365,79765,251-65,83566,21066,70166,93768,000-66,000
681,5-67,96867,73266,99466,83466,34465,910-66,37666,67667,02667,23868,000-66,500
681-67,97467,79467,32467,18466,89166,568-66,91767,15367,35067,54068,000-67,000
706-69,92069,32066,02365,74363,42562,047-63,50564,30566,10366,47870,000-64,000
704-69,94069,46567,34267,10665,61064,642-65,67066,27067,40267,71770,000-66,000
703-69,95269,57768,00367,79166,70465,943-66,75267,25268,05168,33170,000-67,000
702-69,96269,68268,66368,48367,79767,251-67,83568,21068,70168,93770,000-68,000
701,5-69,96869,73268,99468,83468,34467,910-68,37668,67669,02669,23870,000-68,500
726-71,92071,32068,02367,74365,42564,047-65,50566,30568,10368,47872,000-66,000
724-71,94071,46569,34269,10667,61066,642-67,67068,27069,40269,71772,000-68,000
723-71,95271,57770,00369,79168,70467,943-68,75269,25270,05170,33172,000-69,000
722-71,96271,68270,66370,48369,79769,251-69,83570,21070,70170,93772,000-70,000
721,5-71,96871,73270,99470,83470,34469,910-70,37670,67671,02671,23872,000-70,500
721-71,97471,79471,32471,18470,89170,568-70,91771,15371,35071,54072,000-71,000
756-74,92074,32071,02370,74368,42567,047-68,50569,30571,10371,47875,000-69,000
754-74,94074,46572,34272,10670,61069,642-70,67071,27072,40272,71775,000-71,000
753-74,95274,57773,00372,79171,70470,943-71,75272,25273,05173,33175,000-72,000
752-74,96274,68273,66373,48372,79772,251-72,83573,21073,70173,93775,000-73,000
751,5-74,96874,73273,99473,83473,34472,910-73,37673,67674,02674,23875,000-73,500
766-75,92075,32072,02371,74369,42568,047-69,50570,30572,10372,47876,000-70,000
764-75,94075,46573,34273,10671,61070,642-71,67072,27073,40273,71776,000-72,000
763-75,95275,57774,00373,79172,70471,943-72,75273,25274,05174,33176,000-73,000
762-75,96275,68274,66374,48373,79773,251-73,83574,21074,70174,93776,000-74,000
761,5-75,96875,73274,99474,83474,34473,910-74,37674,67675,02675,23876,000-74,500
761-75,97475,79475,32475,18474,89174,568-74,91775,15375,35075,54076,000-75,000
782-77,96277,68276,66376,48375,79775,251-75,83576,21076,70176,93778,000-76,000
806-79,92079,32076,02375,74373,42572,047-73,50574,30576,10376,47880,000-74,000
804-79,94079,34077,34277,10675,61074,642-75,67076,27077,40277,71780,000-76,000
803-79,95279,57778,00377,79176,70475,943-76,75277,25278,05178,33180,000-77,000
802-79,96279,68278,66378,48377,79777,251-77,83578,21078,70178,93780,000-78,000
801,5-79,96879,73278,99478,83478,34477,910-78,37678,67679,02679,23880,000-78,500
801-79,97479,79479,32479,18478,89178,568-78,91779,15379,35079,54080,000-79,000
822-81,96281,68280,66380,48379,79779,251-79,83580,21080,70180,93782,000-80,000
856-84,92084,32081,02380,74378,42577,047-78,50579,30581,10381,47885,000-79,000
854-84,94084,46582,34282,10680,61079,642-80,67081,27082,40282,71785,000-81,000
853-84,95284,57783,00382,79181,70480,943-81,75282,25283,05183,33185,000-82,000
852-84,96284,68283,66383,48382,79782,251-82,83583,21083,70183,93785,000-83,000
851,5-84,96884,73283,99483,83483,34482,910-83,37683,67684,02684,23885,000-83,500
906-89,92089,32086,02385,74383,42582,047-83,50584,30586,10386,47890,000-84,000
904-89,94089,46587,34287,10685,61084,642-85,67086,27087,40287,71790,000-86,000
903-89,95289,57788,00387,79186,70485,943-86,75287,25288,05188,33190,000-87,000
902-89,96289,68288,66388,48387,79787,251-87,83588,21088,70188,93790,000-88,000
901,5-89,96889,73288,99488,83488,34487,910-88,37688,67689,02689,23890,000-88,500
956-94,92094,32091,02390,72388,42587,027-88,50589,30591,10391,50395,000-89,000
954-94,94094,46592,34292,09290,61089,628-90,67091,27092,40292,73795,000-91,000
953-94,95294,57793,00392,77991,70490,931-91,75292,25293,05193,35195,000-92,000
952-94,96294,68293,66393,47392,79792,241-92,83593,21093,70193,95195,000-93,000
951,5-94,96894,73293,99493,81493,34492,890-93,37693,67694,02694,26295,000-93,500
1006-99,92099,32096,02395,72393,42592,027-93,50594,30596,10396,503100,000-94,000
1004-99,94099,46597,34297,09295,61094,628-95,67096,27097,40297,737100,000-96,000
1003-99,95299,57798,00397,77996,70495,931-96,75297,25298,05198,351100,000-97,000
1002-99,96299,68298,66398,47397,79797,241-97,83598,21098,70198,951100,000-98,000
1001,5-99,96899,73298,99498,81498,34497,890-98,37698,67699,02699,262100,000-98,500
1056-104,920104,320101,023100,72398,42597,027-98,50599,305101,103101,503105,000-99,000
1054-104,940104,465102,342102,092100,61099,628-100,670101,270102,402102,737105,000-101,000
1053-104,952104,577103,003102,779101,704100,931-101,752102,252103,051103,351105,000-102,000
1052-104,962104,682103,663103,473102,797102,241-102,835103,210103,701103,951105,000-103,000
1051,5-104,968104,732103,994103,814103,344102,890-103,376103,676104,026104,262105,000-103,500
1106-109,920109,320106,023105,723103,425102,027-103,505104,305106,103106,503110,000-104,000
1104-109,940109,465107,342107,092105,610104,628-105,670106,270107,402107,737110,000-106,000
1103-109,952109,577108,003107,779106,704105,931-106,752107,252108,051108,351110,000-107,000
1102-109,962109,682108,663108,473107,797107,241-107,835108,210108,701108,951110,000-108,000
1101,5-109,968109,732108,994108,814108,344107,890-108,376108,676109,026109,262110,000-108,500
1156-114,920114,320111,023110,723108,425107,027-108,505109,305111,103111,503115,000-109,000
1154-114,940114,465112,342112,092110,610109,628-110,670111,270112,402112,737115,000-111,000
1153-114,952114,577113,003112,779111,704110,931-111,752112,252113,051113,351115,000=112,000
1152-114,962114,682113,663113,473112,797112,241-112,835113,210113,701113,951115,000-113,000
1151,5-114,968114,732113,994113,814113,344112,890-113,376113,676114,026114,262115,000-113,500
1206-119,920119,320116,023115,723113,425112,027-113,505114,305116,103116,503120,000-114,000
1204-119,940119,465117,342117,092115,610114,628-115,670116,270117,402117,737120,000-116,000
1203-119,952119,577118,003117,779116,704115,931-116,752117,252118,051118,351120,000-117,000
1202-119,962119,682118,663118,473117,797117,241-117,835118,210118,701118,951120,000-118,000
1201,5-119,968119,732118,994118,814118,344117,890-118,376118,676119,026119,262120,000-118,500
1258-124,900124,190119,704119,369116,240114,441-116,340117,340119,804120,254125,000-117,000
1256-124,920124,320121,023120,723118,425117,027-118,505119,305121,103121,503125,000-119,000
1254-124,940124,465122,342122,092120,610119,628-120,670121,270122,402122,737125,000-121,000
1253-124,952124,577123,003122,779121,704120,931-121,752122,252123,051123,351125,000-122,000
1252-124,962124,682123,663123,473122,797122,241-122,835123,210123,701123,951125,000-123,000
1251,5-124,968124,732123,994123,814123,344122,890-123,376123,676124,026124,262125,000-123,500
1308-129,900129,190124,704124,369121,240119,441-121,340122,340124,804125,254130,000-122,000
1306-129,920129,320126,023125,723123,425122,027-123,505124,305126,103126,503130,000-124,000
1304-129,940129,465127,342127,092125,610124,628-125,670126,270127,402127,737130,000-126,000
1303-129,952129,577128,003127,779126,704125,931-126,752127,252128,051128,351130,000-127,000
1302-129,962129,682128,663128,473127,797127,241-127,835128,210128,701128,951130,000-128,000
1301,5-129,968129,732128,994128,814128,344127,890-128,376128,676129,026129,262130,000-128,500
1356-134,920134,320131,023130,723128,425127,027-128,505129,305131,103131,503135,000-129,000
1354-134,940134,465132,342132,092130,610129,628-130,670131,270132,402132,737135,000-131,000
1353-134,952134,577133,003132,779131,704130,931-131,752132,252133,051133,351135,000-132,000
1352-134,962134,682133,663133,473132,797132,241-132,835133,210133,701133,951135,000-133,000
1351,5-134,968134,732133,994133,814133,344132,890-133,376133,676134,026134,262135,000-133,500
1408-139,900139,190134,704134,369131,240129,441-131,340132,340134,804135,254140,000-132,000
1406-139,920139,320136,023135,723133,425132,027-133,505134,305136,103136,503140,000-134,000
1404-139,940139,465137,342137,092135,610134,628-135,670136,270137,402137,737140,000-136,000
1403-139,952139,577138,003137,779136,704135,931-136,752137,252138,051138,351140,000-137,000
1402-139,962139,682138,663138,473137,797137,241-137,835138,210138,701138,951140,000-138,000
1401,5-139,968139,732138,994138,814138,344137,890-138,376138,676139,026139,262140,000-138,500
1456-144,920144,320141,023140,723138,425137,027-138,505139,305141,103141,503145,000-139,000
1454-144,940144,465142,342142,092140,610139,628-140,670141,270142,402142,737145,000-141,000
1453-144,952144,577143,003142,779141,704140,931-141,752142,252143,051143,351145,000-142,000
1452-144,962144,682143,663143,473142,797142,241-142,835143,210143,701143,951145,000-143,000
1451,5-144,968144,732143,994143,814143,344142,890-143,376143,676144,026144,262145,000-143,500
1508-149,900149,190144,704144,369141,240139,441-141,340142,340144,804145,254150,000-142,000
1506-149,920149,320146,023145,723143,425142,027-143,505144,305146,103146,503150,000-144,000
1504-149,940149,465147,342147,092145,610144,628-145,670146,270147,402147,737150,000-146,000
1503-149,952149,577148,003147,779146,704145,931-146,752147,252148,051148,351150,000-147,000
1502-149,962149,682148,663148,473147,797147,241-147,835148,210148,701148,951150,000-148,000
1501,5-149,968149,732148,994148,814148,344147,890-148,376148,676149,026149,262150,000-148,500
1556-154,920154,320151,023150,723148,425147,027-148,505149,305151,103151,503155,000-149,000
1554-154,940154,465152,342152,092150,610149,628-150,670151,270152,402152,737155,000-151,000
1553-154,952154,577153,003152,779151,704150,931-151,752152,252153,051153,351155,000-152,000
1552-154,962154,682153,663153,473152,797152,241-152,835153,210153,701153,951155,000-153,000
1608-159,900159,190154,704154,369151,240149,441-151,340152,340154,804155,254160,000-152,000
1606-159,920159,320156,023155,723153,425152,027-153,505154,305156,103156,503160,000-154,000
1604-159,940159,465157,342157,092155,610154,628-155,670156,270157,402157,737160,000-156,000
1603-159,952159,577158,003157,779156,704155,931-156,752157,252158,051158,351160,000-157,000
1602-159,962159,682158,663158,473157,797157,241-157,835158,210158,701158,951160,000-158,000
1656-164,920164,320161,023160,723158,425157,027-158,505159,305161,103161,503165,000-159,000
1654-164,940164,465162,342162,092160,610159,628-160,670161,270162,402162,737165,000-161,000
1653-164,952164,577163,003162,779161,704160,931-161,752162,252163,051163,351165,000-162,000
1652-164,962164,682163,663163,473162,797162,241-162,835163,210163,701163,951165,000-163,000
1708-169,900169,190164,704164,369161,240159,441-161,340162,340164,804165,254170,000-162,000
1706-169,920169,320166,023165,723163,425162,027-163,505164,305166,103166,503170,000-164,000
1704-169,940169,465167,342167,092165,610164,628-165,670166,270167,402167,737170,000-166,000
1703-169,952169,577168,003167,779166,704165,931-166,752167,252168,051168,351170,000-167,000
1702-169,962169,682168,663168,473167,797167,241-167,835168,210168,701168,951170,000-168,000
1756-174,920174,320171,023170,723168,425167,027-168,505169,305171,103171,503175,000-169,000
1754-174,940174,465172,342172,092170,610169,628-170,670171,270172,402172,737175,000-171,000
1753-174,952174,577173,003172,779171,704170,931-171,752172,252173,051173,351175,000-172,000
1752-174,962174,682173,663173,473172,797172,241-172,835173,210173,701173,951175,000-173,000
1808-179,900179,190174,704174,369171,240169,441-171,340172,340174,804175,254180,000-172,000
1806-179,920179,320176,023175,723173,425172,027-173,505174,305176,103176,503180,000-174,000
1804-179,940179,465177,342177,092175,610174,628-175,670176,270177,402177,737180,000-176,000
1803-179,952179,577178,003177,779176,704175,931-176,752177,252178,051178,351180,000-17,000
1802-179,962179,682178,663178,473177,797177,241-177,835178,210178,701178,951180,000-178,000
1856-184,920184,320181,023180,708178,425177,012-178,505179,305181,103181,528185,000-179,000
1854-184,940184,465182,342182,062180,610179,598-180,670181,270182,402182,777185,000-181,000
1853-184,952184,577183,003182,753181,704180,905-181,752182,252183,051183,386185,000-182,000
1852-184,962184,682183,663183,451182,797182,219-182,835183,210183,701183,981185,000-183,000
1908-189,900189,190184,704184,349181,240179,421-181,340182,340184,804185,279190,000-182,000
1906-189,920189,320186,023185,708183,425182,012-183,505184,305186,103186,528190,000-184,000
1904-189,940189,465187,342187,062185,610184,598-185,670186,270187,402187,777190,000-186,000
1903-189,952189,577188,003187,753186,704185,905-186,752187,252188,051188,386190,000-187,000
1902-189,962189,682188,663188,451187,797187,219-187,835188,210188,701188,981190,000-188,000
1956-194,920194,320191,023190,708188,425187,012-188,505189,305191,103191,528195,000-189,000
1954-194,940194,465192,342192,062190,610189,598-190,670191,270192,402192,777195,000-191,000
1953-194,952194,577193,003192,753191,704190,905-191,752192,252193,051193,386195,000-192,000
1952-194,962194,682193,663193,451192,797192,219-192,835193,210193,701193,981195,000-193,000
2008-199,900199,190194,704194,349191,240189,421-191,340192,340194,804195,279200,000-192,000
2006-199,920199,320196,023195,708193,425192,012-193,505194,305196,103196,528200,000-194,000
2004-199,940199,465197,342197,062195,610194,598-195,670196,270197,402197,777200,000-196,000
2003-199,952199,577198,003197,753196,704195,905-196,752197,252198,051198,386200,000-197,000
2002-199,962199,682198,663198,451197,797197,219-197,835198,210198,701198,981200,000-198,000
2056-204,920204,320201,023200,708198,425197,012-198,505199,305201,103201,528205,000-199,000
2054-204,940204,465202,342202,062200,610199,598-200,670201,270202,402202,777205,000-201,000
2053-204,952204,577203,003202,753201,704200,905-201,752202,252203,051203,386205,000-202,000
2052-204,962204,682203,663203,451202,797202,219-202,835203,210203,701203,981205,000-203,000
2108-209,900209,190204,704204,349201,240199,421-201,340202,340204,804205,279210,000-202,000
2106-209,920209,320206,023205,708203,425202,012-203,505204,305206,103206,528210,000-204,000
2104-209,940209,465207,342207,062205,610204,598-205,670206,270207,402207,777210,000-206,000
2103-209,952209,577208,003207,753206,704205,905-206,752207,252208,051208,386210,000-207,000
2102-209,962209,682208,663208,451207,797207,219-207,835208,210208,701208,981210,000-208,000
2156-214,920214,320211,023210,708208,425207,012-208,505209,305211,103211,528215,000-209,000
2154-214,940214,465212,342212,062210,610209,598-210,670211,270212,402212,777215,000-211,000
2153-214,952214,577213,003212,753211,704210,905-211,752212,252213,051213,386215,000-212,000
2208-219,900219,190214,704214,349211,240209,421-211,340212,340214,804215,279220,000-212,000
2206-219,920219,320216,023215,708213,425212,012-213,505214,305216,103216,528220,000-214,000
2204-219,940219,465217,342217,062215,610214,598-215,670216,270217,402217,777220,000-216,000
2203-219,952219,577218,003217,753216,704215,905-216,752217,252218,051218,386220,000-217,000
2202-219,962219,682218,663218,451217,797217,219-217,835218,210218,701218,981220,000-218,000
2256-224,920224,545221,023220,708218,425217,012-218,505219,305221,103221,528225,000-219,000
2254-224,940224,465222,342222,062220,610219,598-220,670221,270222,402222,777225,000-221,000
2253-224,952224,577223,003222,753221,704220,905-221,752222,252223,051223,386225,000-222,000
2252-224,962224,682223,663223,451222,797222,219-222,835223,210223,701223,981225,000-223,000
2306-229,920229,320226,023225,708223,425222,012-223,505224,305226,103226,528230,000-224,000
2304-229,940229,465227,342227,062225,610224,598-225,670226,270227,402227,777230,000-226,000
2303-229,952229,577228,003227,753226,704225,905-226,752227,252228,051228,386230,000-227,000
2302-229,962229,682228,663228,451227,797227,219-227,835228,210228,701228,981230,000-228,000
2356-234,920234,320231,023230,668228,425226,972-228,505229,305231,103231,578235,000-229,000
2354-234,940234,465232,342232,062230,610229,598-230,670231,270232,402232,777235,000-231,000
2353-234,952234,577233,003232,753231,704230,905-231,752232,252233,051233,386235,000-232,000
2408-239,900239,190234,704234,349231,240229,421-231,340232,340234,804235,279240,000-232,000
2406-239,920239,320236,023235,708233,425232,012-233,505234,305236,103236,528240,000-234,000
2404-239,940239,465237,342237,062235,610234,598-235,670236,270237,402237,777240,000-236,000
2403-239,952239,577238,003237,753236,704235,905-236,752237,252238,051238,386240,000-237,000
2402-239,962239,682238,663238,451237,797237,219-237,835238,210238,701238,981240,000-238,000
2456-244,920244,320241,023240,708238,425237,012-238,505239,305241,103241,528245,000-239,000
2454-244,940244,465242,342242,062240,610239,598-240,670241,270242,402242,777245,000-241,000
2453-244,952244,577243,003242,753241,704240,905-241,752242,252243,051243,386245,000-242,000
2452-244,962244,682243,663243,451242,797242,219-242,835243,210243,701243,981245,000-243,000
2508-249,900249,190244,704244,349241,240239,421-241,340242,340244,804245,279250,000-242,000
2506-249,920249,320246,023245,708243,425242,012-243,505244,305246,103246,528250,000-244,000
2504-249,940249,465247,342247,062245,610244,598-245,670246,270247,402247,777250,000-246,000
2503-249,952249,577248,003247,753246,704245,905-246,752247,252248,051248,386250,000-247,000
2502-249,962249,682248,663248,451247,797247,219-247,835248,210248,701248,981250,000-248,000
2556-254,920254,320251,023250,668248,425246,972-248,505249,305251,103251,578255,000-249,000
2554-254,940254,465252,342252,062250,610249,598-250,670251,270252,402252,777255,000-251,000
2553-254,952254,577253,003252,753251,704250,905-251,752252,252253,051253,386255,000-252,000
2608-259,900259,190254,704254,349251,240249,421-251,340252,340254,804255,279260,000-252,000
2606-259,920259,320256,023255,708253,425252,012-253,505254,305256,103256,528260,000-254,000
2604-259,940259,465257,342257,062255,610254,598-255,670256,270257,402257,777260,000-256,000
2603-259,952259,577258,003257,753256,704255,905-256,752257,252258,051258,386260,000-257,000
2656-264,920264,320261,023260,708258,425257,012-258,505259,305261,103261,528265,000-259,000
2654-264,940264,465262,342262,062260,610259,598-260,670261,270262,402262,777265,000-261,000
2653-264,952264,577263,003262,753261,704260,905-261,752262,252263,051263,386265,000-262,000
2706-269,920269,320266,023265,708263,425262,012-263,505264,305266,103266,528270,000-264,000
2704-269,940269,465267,342267,062265,610264,598-265,670266,270267,402267,777270,000-266,000
2703-269,952269,577268,003267,753266,704265,905-266,752267,252268,051268,386270,000-267,000
2756-274,920274,320271,023270,708268,425267,012-268,505269,305271,103271,528275,000-269,000
2754-274,940274,465272,342272,062270,610269,598-270,670271,270272,402272,777275,000-271,000
2753-274,952274,577273,003272,753271,704270,905-271,752272,252273,051273,386275,000-272,000
2808-279,900279,190274,704274,349271,240269,421-271,340272,340274,804275,279280,000-272,000
2806-279,920279,320276,023275,708273,425272,012-273,505274,305276,103276,528280,000-274,000
2804-279,940279,465277,342277,062275,610274,598-275,670276,270277,402277,777280,000-276,000
2803-279,952279,577278,003277,753276,704275,905-276,752277,252278,051278,386280,000-277,000
2856-284,920284,320281,023280,708278,425277,012-278,505279,305281,103281,528285,000-279,000
2854-284,940284,465282,342282,062280,610279,598-280,670281,270282,402282,777285,000-281,000
2853-284,952284,577283,003282,753281,704280,905-281,752282,252283,051283,386285,000-282,000
2906-289,920289,320286,023285,708283,425282,012-283,505284,305286,103286,528290,000-284,000
2904-289,940289,465287,342287,062285,610284,598-285,670286,270287,402287,777290,000-286,000
2903-289,952289,577288,003287,753286,704285,905-286,752287,252288,051288,386290,000-287,000
2956-294,920294,320291,023290,708288,425287,012-288,505289,305291,103291,528295,000-289,000
2954-294,940294,465292,342292,062290,610289,598-290,670291,270292,402292,777295,000-291,000
2953-294,952294,577293,003292,753291,704290,905-291,752292,252293,051293,386295,000-292,000
3008-299,900299,190294,704294,349291,240289,421-291,340292,340294,804295,279300,000-292,000
3006-299,920299,320296,023295,708293,425292,012-293,505294,305296,103296,528300,000-294,000
3004-299,940299,465297,342297,062295,610294,598-295,670296,270297,402297,777300,000-296,000
3003-299,952299,577298,003297,753296,704295,905-296,752297,252298,051298,386300,000-297,000
Size mmPitch mmmaxminmaxminmaxminminmaxminmaxminNote**Tap Drill
Major Dia d = D mmPitch Dia d 2 = D 2 mm.Minor Dia d 3 mmMinor Dia D 1 mmPitch Dia D 2 = d 2 mm.Major Dia D = d mm
External (bolt thread)- 6g ClassInternal (nut thread)- 6H Class
  • Row 2 (): markdown separator line directly after the leading header-group rows (the 3-row group header split across header + body) — carried as an empty row at the source position
  • Row 440 (Size mm): mid-table header repeat: the source page repeats its 3-row header group ("Size mm | Pitch mm" / group labels / max-min labels) at the ladder midpoint, followed by a separator line — both carried verbatim at position (rows 439-441 header repeat, row 442 empty separator row)

Materials

  • Thread limits are geometry, not material — but they drive manufacture: the 6g external clearance leaves plating room, the 6H internal carries the mating allowance. Order threaded fasteners by size, pitch and class (6g/6H is the general-purpose default and what this ladder tabulates); special classes or fits are a quotation line against the governing standard, not an extension of this table

Ordering & documentation

Documents

Shipments are backed by Mill Test Certificate (MTC), Dimensional Report, Salt Spray Test Report on request, with full batch traceability from raw material to finished product. Quality management follows the owner-confirmed compliance list: ISO 9001:2015, RoHS, REACH. Exact document sets are confirmed on the order.

Quotation

  • The fastener family (Legacy BS 3643 Metric Thread Limits of Size (6g / 6H Full Ladder)) plus the standard designation from your drawing — DIN / ISO / JIS / ASTM / ANSI, or a drawing for custom parts.
  • Size (diameter and length), thread type (metric or inch), property class or grade, and coating or finish.
  • Quantity per size and your target delivery date.
  • Destination country, and any required documents (for example a mill test certificate) so the quote includes them.

Sample & supply

Minimum order quantity is 10,000 pieces. Stock items run 3–7 days. Quantities or variants outside the standard range are confirmed at quotation.

Storage & shipping

Parts are packed for export and shipped factory-direct to buyers in Europe, Asia, the Americas and the Middle East. Store fasteners dry and protected until installation, and keep coated parts in their packaging until use; specific packing and preservation requirements can be stated on the order and confirmed at quotation.

Frequently asked questions

What is the practical difference between reading a thread from this ladder and from a basic-dimension table like ISO 724?

ISO 724 gives the theoretical thread — the basic major, pitch and minor diameters a perfect thread would have. This ladder gives the manufacturable thread: the max/min bands a real bolt or nut must stay inside so that a 6g bolt screws into a 6H nut with the right clearance. The bands are offset from basic by the fundamental deviation (negative for 6g external, giving the clearance; zero for 6H internal) plus the tolerance width — e.g. the M10 x 1,5 basic pitch diameter is 9,026 on the ISO 724 page, while this ladder shows the external band 8,862 - 8,994 sitting just below it and the internal band 9,026 - 9,198 just above. Use the basic table for design calculations (stress areas, tapping drill math), and this ladder for manufacture, gauging and acceptance. If a drawing states a class other than 6g/6H, the bands shift — that is a quotation against the tolerance-class tables, not a rescale of this ladder.

Request a Quote

Get factory-direct pricing from the manufacturer.

What to include in your inquiry

  • ✓ Standard and property class (e.g. DIN 912, ISO 4762, class 8.8) — or a drawing for custom parts.
  • ✓ Sizes, lengths and thread type (metric or inch).
  • ✓ Quantity per size and your target delivery date.
  • ✓ Destination country, plus any coating or finish requirement.
  • ✓ Any documents you need with the shipment (e.g. mill test certificate) so the quote includes them.
  • ✓ Your inquiry goes straight to the factory team by email and gets a reply within 24 hours.
  • ✓ Factory-direct pricing
  • ✓ Standard and custom specifications
  • ✓ Factory-direct export to buyers in Europe, Asia, the Americas and the Middle East
  • ✓ Full fastener family support

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