nuts › self-locking extended washer nuts
NAS1291C4M
Locking Extended Washer Nut Self
Description
Self Locking Hex Nut
Specifications
| Locking Feature | Prevailing torque all metal design |
|---|---|
| Material | CRES |
| NIIN | 00-894-3637 |
| NSN | 5310-00-894-3637 |
| Nut Style | Hexagon |
| Overall Height | Between 0.205 inches and 0.219 inches |
| Surface Treatment | Passivate |
| Temperature Rating | 550.0 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | Unf (fine thread) |
| Thread Size | 0.25 |
| Washer Outside Diameter | 0.42 |
| Washer Thickness | 0.019 |
| Weight | .005 lb |
| Width Across Flats | Between 0.305 inches and 0.316 inches |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1291C4M. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error