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.
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.
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
Start with the size and quantity you need. Include the following details where available; remaining requirements can be confirmed by email.
- Thread & mating part
- Give the nominal diameter, pitch, thread system and mating bolt or rod specification.
- Nut form
- Specify the exact series, standard and edition, or attach a dimensioned drawing.
- Material & finish
- State the required grade or property class and finish. Listed options are reviewed for the requested size.
- Quantity & destination
- Give the quantity for each specification and the delivery destination.
Confirmed per order: MOQ, sample arrangements, lead time, supply combinations and inspection documents. A requested delivery date is reviewed during quotation.
Request a quotation →Buying nuts with bolts, rods & washers
Prepare one clear inquiry for the complete assembly. Unspecified supply details are Confirmed per order.
What should I send for a nut, bolt and washer quotation?
List each component separately: exact standard and edition, diameter and pitch, bolt or rod length, material or property class, surface finish and quantity. Add washer dimensions, packing requirements and the destination country or port. If a requirement is not yet specified, write Confirmed per order.
Can I include DIN 931 or DIN 933 bolts in the same inquiry?
Yes. Identify whether you need DIN 931 partially threaded hex bolts or DIN 933 fully threaded hex bolts, and give the nut specification separately. Include thread diameter, pitch, bolt length, grade, finish and quantities for both components. Compatibility and the exact supply combination are Confirmed per order.
What information is needed when ordering nuts with threaded rods?
Include the DIN 976-1 threaded rod specification, overall length, diameter, pitch, material or property class and finish. State the number of rods and nuts separately; do not leave the number of nuts per assembly implicit. The mating combination and availability are Confirmed per order.
How should I specify the washers for the assembly?
State the required washer standard and dimensions, material, finish and quantity. See the ISO 7089 flat washer reference and include any drawing or project requirements. Washer dimensions and suitability for the complete assembly are Confirmed per order.
Are DIN 934 and ISO 4032 automatically interchangeable?
No. The existing product reference treats DIN 934 and ISO 4032 as separate dimensional specifications. Quote the exact standard and edition, and check nut height and width across flats before substitution. Any proposed alternative is Confirmed per order.
Which material, property class and finish should I request?
Use the requirements from your drawing or project specification for every component. The existing nut catalog lists carbon steel and stainless steel, with Plain Black, Zinc Plated, HDG and Nickel finishes. These are inquiry options, not a guarantee that every size and grade combination is available. The grade, finish and assembly compatibility are Confirmed per order.
Can bolts, nuts and washers be packed together?
Request separate packing or assembly-based packing in your inquiry and state the quantity of each component. Cartons plus pallets are the usual packing method. Typical carton sizes are 250 × 250 × 150 mm and 420 × 320 × 100 mm. Packing together, pieces per carton, net and gross weight, labels and pallet dimensions are Confirmed per order. Long threaded rods require a packing arrangement suited to their length; do not assume these carton sizes apply.
What are the MOQ, lead time and inspection requirements?
MOQ, lead time, samples and available inspection documents are Confirmed per order. Include the required delivery date, destination country or port and any inspection or traceability requirements. See the bolt, nut and washer RFQ checklist or the threaded rod buying checklist before sending your request.
