DIN 6926 Hex Flange Nuts (Heavy Type)
DIN 6926 hex nuts with flange, heavy type — the wide-flange metric flange nut, M5 to M20, coarse and two fine-pitch series — with the full collected 8-size table: flange diameter, bearing-face and nut heights, across-flats tolerances and the source's fine-pitch columns as printed.
Last updated: 2026-11
Specifications
DIN 6926 is the heavy-type flange nut: a hex nut with an integral flange that acts as a built-in washer, spreading the clamp load over a bearing diameter (d c) far wider than the across-flats. The flange eliminates a separate washer, distributes load on oversized or soft holes, and resists indentation into the mating surface. Heavy type means a taller section and a larger flange than the DIN 6923 light series — the choice for heavier clamp loads and structural-style joints. The collected table covers M5 to M20 with three pitch columns per size: metric coarse plus two fine-pitch series, where the source prints "/" where a series does not apply (fine pitch starts at M8 and one series drops out again above M12 — the table reproduces the source's cells verbatim, including two bare "-1"/"-1.25" figures it prints without a legend). The m/m w rows split nut height below the flange from effective bearing height. For vibration, the serrated (toothed-flange) lock forms are the DIN 6923-page counterpart in light type; material, property class and finish follow the drawing callout and are not part of the collected table.
| Standard | DIN 6926 — hexagon nuts with flange, heavy type |
|---|---|
| Series | M5 – M20 (8 sizes tabulated); pitch columns per size: coarse plus two fine-pitch series as printed |
| Tabulated geometry | Per size: pitch P (coarse + fine series 1/2), flange edge c, countersink d a, flange diameter d c, bearing face d w, across-corners e, total height h, nut height m, effective bearing height mw, across-flats s, flange runout r |
| Nut form | Integral flange (built-in washer), heavy type — taller section and larger flange than DIN 6923 |
| Family note | Heavy-type counterpart of the DIN 6923 light flange nut; serrated lock variants are the light-series DIN 6923 form |
| Materials / strength | Not tabulated by the collected specification — per RFQ (property class and finish per drawing callout) |
| Nominal thread | P — pitch, coarse thread | P — fine-pitch thread (series 1) | P — fine-pitch thread (series 2) | c — min | d a — min | d a — max | d c — max | d w — min | e — min | h — max | h — min | m — min | mw — min | s — max=nominal size | s — min | r — max |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M5 | 0.8 | / | / | 1 | 5 | 5.75 | 11.8 | 9.8 | 8.79 | 7.1 | 6.74 | 4.7 | 2.2 | 8 | 7.78 | 0.3 |
| M6 | 1 | / | / | 1.1 | 6 | 6.75 | 14.2 | 12.2 | 11.05 | 9.1 | 8.74 | 5.7 | 3.1 | 10 | 9.78 | 0.36 |
| M8 | 1.25 | 1 | / | 1.2 | 8 | 8.75 | 17.9 | 15.8 | 14.38 | 11.1 | 10.67 | 7.6 | 4.5 | 13 | 12.73 | 0.48 |
| M10 | 1.5 | 1.25 | -1 | 1.5 | 10 | 10.8 | 21.8 | 19.6 | 16.64 | 13.5 | 13.07 | 9.6 | 5.5 | 15 | 14.73 | 0.6 |
| M12 | 1.75 | 1.5 | -1.25 | 1.8 | 12 | 13 | 26 | 23.8 | 20.03 | 16.1 | 15.67 | 11.6 | 6.7 | 18 | 17.73 | 0.72 |
| (M14) | 2 | 1.5 | / | 2.1 | 14 | 15.1 | 29.9 | 27.6 | 23.36 | 18.2 | 17.68 | 13.3 | 7.8 | 21 | 20.67 | 0.88 |
| M16 | 2 | 1.5 | / | 2.4 | 16 | 17.3 | 34.5 | 31.9 | 26.75 | 20.3 | 19.46 | 15.3 | 9 | 24 | 23.67 | 0.96 |
| M20 | 2.5 | 1.5 | / | 3 | 20 | 21.6 | 42.8 | 39.9 | 32.95 | 24.8 | 23.96 | 18.9 | 11.1 | 30 | 29.16 | 1.2 |
Materials
- Material, property class and finish specified per RFQ — the collected specification table covers geometry only
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 (DIN 6926 Hex Flange Nuts (Heavy Type)) 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
DIN 6926 heavy type or DIN 6923 light type — which flange nut should the joint use?
Follow the load and the housing: DIN 6926 heavy type carries heavier clamp loads with a taller section and wider flange, and suits structural-style and heavy-equipment joints; DIN 6923 light type is the general-machine form, and its serrated variant adds anti-vibration grip by biting the mating surface. If the mating face is finished or thin, prefer the plain flange (6926/6923 unserrated) so the teeth have nothing to gouge. Across-flats matches the ordinary hex series in both, so wrenching is unchanged.
What is the MOQ and lead time for this nut type?
The minimum order quantity is 10,000 pieces. Stock items ship in 3–7 days; non-stock items are confirmed at quotation. Common diameters in this nut type are widely stocked; confirm the exact schedule against quantity and size mix at quotation.
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