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NAS1291C04
Locking Extended Washernut Self
Description
Thread: 4-40, Thread Size: 1/8", Head Width: 1/8", NAS1291 series nut
Specifications
| Locking Feature | Prevailing torque all metal design |
|---|---|
| Lubrication | Soluble lubricant |
| Material | Iron |
| Material Specification | Ams 5525 assn standard single material response or ams 5735 assn standard single material response |
| Nut Style | Hexagon |
| Overall Height | Between 0.103 inches and 0.125 inches |
| Precious Material | Silver |
| Precious Material And Location | Silver |
| Surface Treatment | Silver |
| Surface Treatment Specification | Qq-s-365 federal specification single treatment response or ams 2410 assn standard single treatment response |
| Temperature Rating | 800 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series | UNJC |
| Thread Size | 0.112 |
| Washer Outside Diameter | 0.206 |
| Washer Thickness | 0.010 |
| Width Across Flats | Between 0.150 inches and 0.158 inches |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1291C04. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error