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NAS1291C7M
Locking Extended Washer Nut Self
Description
Self Locking Hex Nut
Specifications
| Countersink Angle | 120 degrees nut |
|---|---|
| Locking Feature | Prevailing torque all metal design |
| Lubrication | Dry film lubricant |
| Material | Iron |
| Material Specification | Ms5525 military standard 1st material response or ams 5732 assn standard 2nd material response or ams 5735 assn standard 2nd material response |
| NIIN | 00-052-6754 |
| NSN | 5310-00-052-6754 |
| Nut Style | Hexagon |
| Overall Height | Between 0.313 inches and 0.328 inches |
| Specification Data | 80205-nas1291 government standard |
| Temperature Rating | 450 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.438 |
| Washer Outside Diameter | 0.708 |
| Washer Thickness | 0.035 |
| Weight | .005 lb |
| Width Across Flats | Between 0.494 inches and 0.504 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 NAS1291C7M. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error