Applications and selection
Assemblies designed around slotted-nut retention.
Specify slot dimensions, nut height and the mating retaining arrangement. Thread alignment and pin fit need to be checked as a complete assembly.
Dimensions & technical reference
DIN 935-1:2013
Select the cotter pin and drilled bolt as a system. Slot form varies by size; show slot alignment and pin requirements on the assembly drawing.
| Nominal size | P · coarse | s max | m max | n max | n min | Cotter pin d × L |
|---|---|---|---|---|---|---|
| M4 | 0.7 | 7 | 5.0 | 1.45 | 1.20 | 1x10 |
| M5 | 0.8 | 8 | 6.0 | 1.65 | 1.40 | 1.2x12 |
| M6 | 1 | 10 | 7.5 | 2.25 | 2.00 | 1.6x14 |
| (M7) | 1 | 11 | 8.0 | 2.25 | 2.00 | 1.6x14 |
| M8 | 1.25 | 13 | 9.5 | 2.75 | 2.50 | 2x16 |
| M10 | 1.5 | 16 | 12.0 | 3.05 | 2.80 | 2.5x20 |
| M12 | 1.75 | 18 | 15.0 | 3.80 | 3.50 | 3.2x22 |
| (M14) | 2 | 21 | 16.0 | 3.80 | 3.50 | 3.2x25 |
| M16 | 2 | 24 | 19.0 | 4.80 | 4.50 | 4x28 |
| (M18) | 2.5 | 27 | 21.0 | 4.80 | 4.50 | 4x32 |
| M20 | 2.5 | 30 | 22.0 | 4.80 | 4.50 | 4x36 |
| (M22) | 2.5 | 34 | 26.0 | 5.80 | 5.50 | 5x36 |
| M24 | 3 | 36 | 27.0 | 5.80 | 5.50 | 5x40 |
| (M27) | 3 | 41 | 30.0 | 5.80 | 5.50 | 5x45 |
| M30 | 3.5 | 46 | 33.0 | 7.36 | 7.00 | 6.3x50 |
| (M33) | 3.5 | 50 | 35.0 | 7.36 | 7.00 | 6.3x56 |
| M36 | 4 | 55 | 38.0 | 7.36 | 7.00 | 6.3x63 |
Dimensional source: 164580 · DIN 935-1:2013 ↗. “—” 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: M10 - M100. 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, Zinc Plated, 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.
This U.S. nut standard includes dimensional provisions and slot-gaging information for slotted nuts. Confirm pin and slot geometry. Standards from different systems can vary in dimensions, threads, product scope and test requirements. Confirm the exact designation and edition in the quotation.
Ordering standard
DIN 935-1:2013
United States references for a separate inquiry: ASME B18.2.2 (inch). Confirm the exact form, thread system and drawing before quoting.
What to send for a quotation
- Hex Slotted 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 slotted nuts
Does a slotted nut include the retaining pin?
The pin is a separate item unless it is explicitly included in the quotation. State its dimensions and material if it is required.
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.