nuts › self-locking extended washer nuts
NAS1291-10
Locking Extended Washer Nut Self
Description
Self Locking Hex Nut
Specifications
| Countersink Angle | 120 degrees |
|---|---|
| Dimension A | 0.490 in |
| Dimension B | 0.743 in |
| Dimension H | 0.365 in |
| Dimension W | 1.014 in |
| Features | Lightweight |
| Industry Standards/Certification | NAS1291 |
| Locking Feature | Prevailing torque all metal design |
| Lubrication | Dry film lubricant |
| Material | Steel |
| NIIN | 01-093-7247 |
| NSN | 5310-01-093-7247 |
| Nut Style | Hexagon |
| Overall Height | Between 0.49 inches and 0.55 inches |
| Service Temperature | 450 ºF |
| Specification Data | 80205-nas1291 professional/industrial association standard |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Class 2 or class 3 federal specification single treatment response qq-p-416 |
| Temperature Rating | 450 degrees fahrenheit |
| Thread | 5/8-18 |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty Per Inch (tpi) | 18 |
| Thread Series | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.6250-18 |
| Type | Self-Locking Nut |
| Washer Outside Diameter | 1.014 |
| Washer Thickness | 0.05 |
| Weight | .005 lb |
| Width Across Flats | Between 0.743 inches and 0.755 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 NAS1291-10. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error