Applications and selection
General machinery and fabricated fastening assemblies.
Specify thread diameter and pitch, nut height, width across flats and property class or stainless grade. Confirm the exact DIN or ISO edition rather than assuming identical dimensions.
Dimensions & technical reference
DIN 934:1987
DIN 934 and ISO 4032 are separate dimensional specifications. Nut height and wrench size must be checked before substitution.
| Nominal size | P · coarse | s max | m max |
|---|---|---|---|
| M1 | 0.25 | 2.5 | 0.8 |
| M1.2 | 0.25 | 3 | 1 |
| M1.4 | 0.3 | 3 | 1.2 |
| M1.6 | 0.35 | 3.2 | 1.3 |
| (M1.7) | 0.35 | 3.5 | 1.4 |
| M2 | 0.4 | 4 | 1.6 |
| (M2.3) | 0.45 | 4.5 | 1.8 |
| M2.5 | 0.45 | 5 | 2 |
| (M2.6) | 0.45 | 5 | 2 |
| M3 | 0.5 | 5.5 | 2.4 |
| (M3.5) | 0.6 | 6 | 2.8 |
| M4 | 0.7 | 7 | 3.2 |
| M5 | 0.8 | 8 | 4 |
| M6 | 1 | 10 | 5 |
| (M7) | 1 | 11 | 5.5 |
| M8 | 1.25 | 13 | 6.5 |
| M10 | 1.5 | 17 | 8 |
| M12 | 1.75 | 19 | 10 |
| (M14) | 2 | 22 | 11 |
| M16 | 2 | 24 | 13 |
| (M18) | 2.5 | 27 | 15 |
| M20 | 2.5 | 30 | 16 |
| (M22) | 2.5 | 32 | 18 |
| M24 | 3 | 36 | 19 |
| (M27) | 3 | 41 | 22 |
| M30 | 3.5 | 46 | 24 |
| (M33) | 3.5 | 50 | 26 |
| M36 | 4 | 55 | 29 |
Dimensional source: 164580 · DIN 934:1987 ↗. “—” means no value listed for this combination. P is thread pitch; min / max are dimensional limits. The selection above is not the full standard or a stock list.
ISO alternative: verify before substitution
| Nominal size | P | m max | m min | s max |
|---|---|---|---|---|
| M1.6 | 0.35 | 1.3 | 1.05 | 3.2 |
| M2 | 0.4 | 1.6 | 1.35 | 4 |
| M2.5 | 0.45 | 2 | 1.75 | 5 |
| M3 | 0.5 | 2.4 | 2.15 | 5.5 |
| (M3.5) | 0.6 | 2.8 | 2.55 | 6 |
| M4 | 0.7 | 3.2 | 2.9 | 7 |
| M5 grade A | 0.8 | 4.7 | 4.4 | 8 |
| M6 grade A | 1 | 5.2 | 4.9 | 10 |
| (M7) grade A | 1 | 6.5 | 6.14 | 11 |
| M8 grade A | 1.25 | 6.8 | 6.44 | 13 |
| M10 grade A | 1.5 | 8.4 | 8.04 | 16 |
| M12 grade A | 1.75 | 10.8 | 10.37 | 18 |
| (M14) grade A | 2 | 12.8 | 12.1 | 21 |
| M16 grade A | 2 | 14.8 | 14.1 | 24 |
| (M18) grade B | 2.5 | 15.8 | 15.1 | 27 |
| M20 grade B | 2.5 | 18 | 16.9 | 30 |
| (M22) grade B | 2.5 | 19.4 | 18.1 | 34 |
| M24 grade B | 3 | 21.5 | 20.2 | 36 |
| (M27) grade B | 3 | 23.8 | 22.5 | 41 |
| M30 grade B | 3.5 | 25.6 | 24.3 | 46 |
| (M33) grade B | 3.5 | 28.7 | 27.4 | 50 |
| M36 grade B | 4 | 31 | 29.4 | 55 |
Dimensional source: 164580 · ISO 4032:2023 ↗. “—” means no value listed for this combination. P is thread pitch; min / max are dimensional limits. The selection above is not the full standard or a stock list.
Catalog inquiry range: M2 - M64. Availability, lengths, grades and finishes are confirmed by quotation. Sizes outside the cited reference table require the applicable standard dimensions or an approved drawing. Quote the exact standard and edition; DIN, ISO and U.S. references are not automatically interchangeable.
Materials, surface finishes and standards
Materials for this series: Carbon Steel, Stainless Steel. Surface finishes: Plain Black, Zinc Plated, HDG, Nickel. Compatibility between the grade, finish and operating environment needs to be confirmed.
For titanium, nickel alloy or other non-ferrous requirements, include the exact material grade and drawing. Required mechanical properties, inspection documents and traceability should be stated in the inquiry.
Related U.S. dimensional references for regular hex nuts. Confirm thread system, grade and proof-load requirements. Standards from different systems can vary in dimensions, threads, product scope and test requirements. Confirm the exact designation and edition in the quotation.
Technical reference: ISO 4032 regular nut scope. Product dimensions and the quoted standard must be confirmed together.
Ordering standard
DIN 934:1987; ISO 4032:2023
United States references for a separate inquiry: ASME B18.2.2 (inch); ASME B18.2.4.1M (metric). Confirm the exact form, thread system and drawing before quoting.
What to send for a quotation
- Hex Nuts / Full Nuts or your part number, with the relevant standard and edition.
- Exact dimensions, thread details, quantity and any critical tolerances.
- Material grade, surface finish, inspection requirements and delivery destination.
- For customization, a drawing revision and a description of the mating assembly.
Common questions about hex nuts / full nuts
Are DIN 934 and ISO 4032 identical in every size?
Do not assume universal interchangeability. Check the applicable editions, size range, across-flats dimensions and mechanical requirements for the quoted part.
Can I request a size or material outside this listing?
Yes. Send the required dimensions and exact material grade for review. A quotation is needed to confirm feasibility, price and lead time.