ISO 8676 Hex Head Screws (Fine Pitch, Fully Threaded)

ISO 8676 hexagon head screws fully threaded with metric fine pitch thread, M8×1 to M64×4 — the fully threaded fine-pitch counterpart of ISO 4017, with the collected per-size tables: pitch, a, c, d a, d w, e, k, k 1, r and s across product grades A and B.

Last updated: 2026-11

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ISO 8676 Hex Head Screws (Fine Pitch, Fully Threaded) in an industrial setting — Illustrative image redrawn from real product references — not a photograph of stocked items.

Specifications

ISO 8676 is the fully threaded member of the fine-pitch hex family — the counterpart of ISO 4017 in fine pitch, and the fully threaded partner to the shanked ISO 8765 bolt (the collected page notes it replaces DIN 961). Where the screw passes through a clearance hole and clamps with a nut or into a tapped blind boss, there is no shank to locate against, so threading the full length removes the unthreaded run-up and puts usable thread wherever the joint needs it — the standard pick for adjustment screws, tie rods and through-bolts into tapped housings, especially in fine pitch where every engaged turn counts. The collected tables run M8×1 to M64×4 with sizes repeated per pitch option (M10 at 1.25 and 1, M12 at 1.5 and 1.25, and so on). Per size they tabulate the a thread run-out tolerance, chamfer c, transition d a, bearing-face d w, across-corners e, head height k with grade-toleranced max/min, the k 1 bearing check, fillet r and across-flats s — in product grades A and B, with the source's "Gread" spelling and its "/" cells where Grade A data is not tabulated above M24 kept verbatim and disclosed in the unit notes. Property classes and finishes are not printed by the collected specification and stay per RFQ.

Standard	ISO 8676 — hexagon head screws, fully threaded, metric fine pitch thread; the collected page notes it replaces DIN 961
Series	M8×1 – M64×4 (nine source column groups; sizes repeated per pitch option as printed — M10 at 1.25 and 1, M12 at 1.5 and 1.25, M16/M18/M20/M22 likewise)
Tabulated geometry	Per size: pitch P, a (max/min), c, d a (max), d w (Gread A/B min), e (Gread A/B min), k (nominal, Gread A/B max/min), k 1 (Gread A/B min), r (min), s (max=nominal, Gread A/B min)
Product grades	A and B as printed; all Grade A rows are "/" above M24 — per the source, Grade B applies in the large series
Property classes / finishes	Not tabulated by the collected specification — per RFQ (state class and pitch explicitly: 8.8 M10×1, not "fine M10")

ISO 8676 hex head screws (fine pitch) - per-size dimensions (M8 - M10)All dimensions in millimeters. Attribute labels follow the source (the collected page spells the product grade 'Gread' and the screw grade 'Gread A'/'Gread B' — kept verbatim): P = thread pitch; a = thread run-out tolerance; c = chamfer height; d a = transition diameter; d w = bearing-face diameter; e = width across corners; k = head height; k 1 = head-bearing check height; r = fillet radius; s = width across flats. '/' where the source does not tabulate the cell (all Grade A rows above M24 are '/'); the collected page states the standard replaces DIN 961.
Attribute	M8	(M10)	M10
P — Pitch	1	1.25	1
a — max	3	3.75	3
min	1	1.25	1
c — max	0.6	0.6	0.6
min	0.15	0.15	0.15
d a — max	9.2	11.2	11.2
d w — Gread A — min	11.63	14.63	14.63
Gread B — min	11.47	14.47	14.47
e — Gread A — min	14.38	17.77	17.77
Gread B — min	14.2	17.59	17.59
k — Nominal Size	5.3	6.4	6.4
Gread A — max	5.45	6.58	6.58
min	5.15	6.22	6.22
Gread B — max	5.54	6.69	6.69
min	5.06	6.11	6.11
k 1 — Gread A — min	3.61	4.35	4.35
Gread B — min	3.54	4.28	4.28
r — min	0.4	0.4	0.4
s — max=nominal size	13	16	16
Gread A — min	12.73	15.73	15.73
Gread B — min	12.57	15.57	15.57

ISO 8676 hex head screws (fine pitch) - per-size dimensions (M12 - (M14))All dimensions in millimeters. Attribute labels follow the source (the collected page spells the product grade 'Gread' and the screw grade 'Gread A'/'Gread B' — kept verbatim): P = thread pitch; a = thread run-out tolerance; c = chamfer height; d a = transition diameter; d w = bearing-face diameter; e = width across corners; k = head height; k 1 = head-bearing check height; r = fillet radius; s = width across flats. '/' where the source does not tabulate the cell (all Grade A rows above M24 are '/'); the collected page states the standard replaces DIN 961.
Attribute	M12	(M12)	(M14)
P — Pitch	1.5	1.25	1.5
a — max	4.5	3.75	4.5
min	1.5	1.25	1.5
c — max	0.6	0.6	0.6
min	0.15	0.15	0.15
d a — max	13.7	13.7	15.7
d w — Gread A — min	16.63	16.63	19.64
Gread B — min	16.47	16.47	19.15
e — Gread A — min	20.03	20.03	23.36
Gread B — min	19.85	19.85	22.78
k — Nominal Size	7.5	7.5	8.8
Gread A — max	7.68	7.68	8.98
min	7.32	7.32	8.62
Gread B — max	7.79	7.79	9.09
min	7.21	7.21	8.51
k 1 — Gread A — min	5.12	5.12	6.03
Gread B — min	5.05	5.05	5.96
r — min	0.6	0.6	0.6
s — max=nominal size	18	18	21
Gread A — min	17.73	17.73	20.67
Gread B — min	17.57	17.57	20.16

ISO 8676 hex head screws (fine pitch) - per-size dimensions (M16 - (M18))All dimensions in millimeters. Attribute labels follow the source (the collected page spells the product grade 'Gread' and the screw grade 'Gread A'/'Gread B' — kept verbatim): P = thread pitch; a = thread run-out tolerance; c = chamfer height; d a = transition diameter; d w = bearing-face diameter; e = width across corners; k = head height; k 1 = head-bearing check height; r = fillet radius; s = width across flats. '/' where the source does not tabulate the cell (all Grade A rows above M24 are '/'); the collected page states the standard replaces DIN 961.
Attribute	M16	(M18)	(M18)
P — Pitch	1.5	2	1.5
a — max	4.5	6	4.5
min	1.5	2	1.5
c — max	0.8	0.8	0.8
min	0.2	0.2	0.2
d a — max	17.7	20.2	20.2
d w — Gread A — min	22.49	25.34	25.34
Gread B — min	22	24.85	24.85
e — Gread A — min	26.75	30.14	30.14
Gread B — min	26.17	29.56	29.56
k — Nominal Size	10	11.5	11.5
Gread A — max	10.18	11.715	11.715
min	9.82	11.285	11.285
Gread B — max	10.29	11.85	11.85
min	9.71	11.15	11.15
k 1 — Gread A — min	6.87	7.9	7.9
Gread B — min	6.8	7.81	7.81
r — min	0.6	0.6	0.6
s — max=nominal size	24	27	27
Gread A — min	23.67	26.67	26.67
Gread B — min	23.16	26.16	26.16

ISO 8676 hex head screws (fine pitch) - per-size dimensions (M20 - (M22))All dimensions in millimeters. Attribute labels follow the source (the collected page spells the product grade 'Gread' and the screw grade 'Gread A'/'Gread B' — kept verbatim): P = thread pitch; a = thread run-out tolerance; c = chamfer height; d a = transition diameter; d w = bearing-face diameter; e = width across corners; k = head height; k 1 = head-bearing check height; r = fillet radius; s = width across flats. '/' where the source does not tabulate the cell (all Grade A rows above M24 are '/'); the collected page states the standard replaces DIN 961.
Attribute	M20	(M20)	(M22)
P — Pitch	2	1.5	2
a — max	6	4.5	6
min	2	1.5	2
c — max	0.8	0.8	0.8
min	0.2	0.2	0.2
d a — max	22.4	22.4	24.4
d w — Gread A — min	28.19	28.19	31.71
Gread B — min	27.7	27.7	31.35
e — Gread A — min	33.53	33.53	37.72
Gread B — min	32.95	32.95	37.29
k — Nominal Size	12.5	12.5	14
Gread A — max	12.715	12.715	14.215
min	12.285	12.285	13.785
Gread B — max	12.85	12.85	14.35
min	12.15	12.15	13.65
k 1 — Gread A — min	8.6	8.6	9.65
Gread B — min	8.51	8.51	9.56
r — min	0.8	0.8	0.8
s — max=nominal size	30	30	34
Gread A — min	29.67	29.67	33.38
Gread B — min	29.16	29.16	33

ISO 8676 hex head screws (fine pitch) - per-size dimensions ((M22) - (M27))All dimensions in millimeters. Attribute labels follow the source (the collected page spells the product grade 'Gread' and the screw grade 'Gread A'/'Gread B' — kept verbatim): P = thread pitch; a = thread run-out tolerance; c = chamfer height; d a = transition diameter; d w = bearing-face diameter; e = width across corners; k = head height; k 1 = head-bearing check height; r = fillet radius; s = width across flats. '/' where the source does not tabulate the cell (all Grade A rows above M24 are '/'); the collected page states the standard replaces DIN 961.
Attribute	(M22)	M24	(M27)
P — Pitch	1.5	2	2
a — max	4.5	6	6
min	1.5	2	2
c — max	0.8	0.8	0.8
min	0.2	0.2	0.2
d a — max	24.4	26.4	30.4
d w — Gread A — min	31.71	33.61	/
Gread B — min	31.35	33.25	38
e — Gread A — min	37.72	39.98	/
Gread B — min	37.29	39.55	45.2
k — Nominal Size	14	15	17
Gread A — max	14.215	15.215	/
min	13.785	14.785	/
Gread B — max	14.35	15.35	17.35
min	13.65	14.65	16.65
k 1 — Gread A — min	9.65	10.35	/
Gread B — min	9.56	10.26	11.66
r — min	0.8	0.8	1
s — max=nominal size	34	36	41
Gread A — min	33.38	35.38	/
Gread B — min	33	35	40

ISO 8676 hex head screws (fine pitch) - per-size dimensions (M30 - M36)All dimensions in millimeters. Attribute labels follow the source (the collected page spells the product grade 'Gread' and the screw grade 'Gread A'/'Gread B' — kept verbatim): P = thread pitch; a = thread run-out tolerance; c = chamfer height; d a = transition diameter; d w = bearing-face diameter; e = width across corners; k = head height; k 1 = head-bearing check height; r = fillet radius; s = width across flats. '/' where the source does not tabulate the cell (all Grade A rows above M24 are '/'); the collected page states the standard replaces DIN 961.
Attribute	M30	(M33)	M36
P — Pitch	2	2	3
a — max	6	6	9
min	2	2	3
c — max	0.8	0.8	0.8
min	0.2	0.2	0.2
d a — max	33.4	36.4	39.4
d w — Gread A — min	/	/	/
Gread B — min	42.75	46.55	51.11
e — Gread A — min	/	/	/
Gread B — min	50.85	55.37	60.79
k — Nominal Size	18.7	21	22.5
Gread A — max	/	/	/
min	/	/	/
Gread B — max	19.12	21.42	22.92
min	18.28	20.58	22.08
k 1 — Gread A — min	/	/	/
Gread B — min	12.8	14.41	15.46
r — min	1	1	1
s — max=nominal size	46	50	55
Gread A — min	/	/	/
Gread B — min	45	49	53.8

ISO 8676 hex head screws (fine pitch) - per-size dimensions ((M39) - (M45))All dimensions in millimeters. Attribute labels follow the source (the collected page spells the product grade 'Gread' and the screw grade 'Gread A'/'Gread B' — kept verbatim): P = thread pitch; a = thread run-out tolerance; c = chamfer height; d a = transition diameter; d w = bearing-face diameter; e = width across corners; k = head height; k 1 = head-bearing check height; r = fillet radius; s = width across flats. '/' where the source does not tabulate the cell (all Grade A rows above M24 are '/'); the collected page states the standard replaces DIN 961.
Attribute	(M39)	M42	(M45)
P — Pitch	3	3	3
a — max	9	9	9
min	3	3	3
c — max	1	1	1
min	0.3	0.3	0.3
d a — max	42.4	45.6	48.6
d w — Gread A — min	/	/	/
Gread B — min	55.86	59.95	64.7
e — Gread A — min	/	/	/
Gread B — min	66.44	71.3	76.95
k — Nominal Size	25	26	28
Gread A — max	/	/	/
min	/	/	/
Gread B — max	25.42	26.42	28.42
min	24.58	25.58	27.58
k 1 — Gread A — min	/	/	/
Gread B — min	17.21	17.91	19.31
r — min	1	1.2	1.2
s — max=nominal size	60	65	70
Gread A — min	/	/	/
Gread B — min	58.8	63.1	68.1

ISO 8676 hex head screws (fine pitch) - per-size dimensions (M48 - M56)All dimensions in millimeters. Attribute labels follow the source (the collected page spells the product grade 'Gread' and the screw grade 'Gread A'/'Gread B' — kept verbatim): P = thread pitch; a = thread run-out tolerance; c = chamfer height; d a = transition diameter; d w = bearing-face diameter; e = width across corners; k = head height; k 1 = head-bearing check height; r = fillet radius; s = width across flats. '/' where the source does not tabulate the cell (all Grade A rows above M24 are '/'); the collected page states the standard replaces DIN 961.
Attribute	M48	(M52)	M56
P — Pitch	3	4	4
a — max	9	12	12
min	3	4	4
c — max	1	1	1
min	0.3	0.3	0.3
d a — max	52.6	56.6	63
d w — Gread A — min	/	/	/
Gread B — min	69.45	74.2	78.66
e — Gread A — min	/	/	/
Gread B — min	82.6	88.25	93.56
k — Nominal Size	30	33	35
Gread A — max	/	/	/
min	/	/	/
Gread B — max	30.42	33.5	35.5
min	29.58	32.5	34.5
k 1 — Gread A — min	/	/	/
Gread B — min	20.71	22.75	24.15
r — min	1.6	1.6	2
s — max=nominal size	75	80	85
Gread A — min	/	/	/
Gread B — min	73.1	78.1	82.8

ISO 8676 hex head screws (fine pitch) - per-size dimensions ((M60) - M64)All dimensions in millimeters. Attribute labels follow the source (the collected page spells the product grade 'Gread' and the screw grade 'Gread A'/'Gread B' — kept verbatim): P = thread pitch; a = thread run-out tolerance; c = chamfer height; d a = transition diameter; d w = bearing-face diameter; e = width across corners; k = head height; k 1 = head-bearing check height; r = fillet radius; s = width across flats. '/' where the source does not tabulate the cell (all Grade A rows above M24 are '/'); the collected page states the standard replaces DIN 961.
Attribute	(M60)	M64
P — Pitch	4	4
a — max	12	12
min	4	4
c — max	1	1
min	0.3	0.3
d a — max	67	71
d w — Gread A — min	/	/
Gread B — min	83.41	88.16
e — Gread A — min	/	/
Gread B — min	99.21	104.86
k — Nominal Size	38	40
Gread A — max	/	/
min	/	/
Gread B — max	38.5	40.5
min	37.5	39.5
k 1 — Gread A — min	/	/
Gread B — min	26.25	27.65
r — min	2	2
s — max=nominal size	90	95
Gread A — min	/	/
Gread B — min	87.8	92.8

Materials

Material and property class specified per RFQ — name diameter and pitch together at quotation

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 (ISO 8676 Hex Head Screws (Fine Pitch, Fully Threaded)) 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

ISO 8676 (fully threaded) or ISO 8765 (shank) in fine pitch?

By what the joint needs from the unthreaded steel. The shanked ISO 8765 bolt puts a precise parallel shank through the joint — shear loads ride on the plain dowel surface, and the head seats at a controlled grip length — which is what a fitted or shear-loaded joint wants. The fully threaded ISO 8676 screw gives up the shear shank and gains flexibility: clamp position anywhere along the screw, use in tapped blind bosses where a shank would bottom out, and shorter stock lists because one screw spans several grip lengths. The head envelope (k, s, e, d w) is identical size for size across the two, so wrenching and seats do not change. Order by diameter and pitch together — the collected tables repeat each diameter per pitch (M10 at 1.25 and 1) — and note the grade discipline: above M24 the source tabulates Grade B only ("/" Grade A cells), so large-series work is Grade B by the collected specification.

What is the MOQ and lead time for this screw type?

The minimum order quantity is 10,000 pieces. Stock items ship in 3–7 days; non-stock items are confirmed at quotation. Common sizes in this screw type are widely stocked; confirm the exact schedule against quantity and size mix at quotation.

Related knowledge

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

ISO 8676 Hex Head Screws (Fine Pitch, Fully Threaded)

Specifications

Materials

Ordering & documentation

Documents

Quotation

Sample & supply

Storage & shipping

Frequently asked questions

ISO 8676 (fully threaded) or ISO 8765 (shank) in fine pitch?

What is the MOQ and lead time for this screw type?

Related grades & products

Related knowledge

Request a Quote

What to include in your inquiry