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NAS1805-4
12 Point Self Locking Nut
Description
12 Point Self Locking Nut
Specifications
| Diameter A | 0.434 in |
|---|---|
| Dimension C | 0.347 in |
| Features | Extended Washer, Passivated |
| Finish | Unplated |
| Industry Standards/Certification | NAS1805 |
| Locking Feature | Prevailing torque all metal design |
| Lubrication | Dry film lubricant |
| Material | CRES |
| Material Specification | Ams 5731 assn standard single material response |
| Maximum Dimension H | 0.250 in |
| Maximum Dimension W | 0.313 in |
| Minimum Diameter B | 0.394 in |
| Minimum Dimension W | 0.305 in |
| NIIN | 01-196-0241 |
| NSN | 5310-01-196-0241 |
| Nut Style | Double hexagon |
| Overall Height | 0.250 |
| Service Temperature | 450 ºF |
| Shape | Double Hexagon |
| Specification Data | 80205-nas1805 professional/industrial association standard |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 federal specification single treatment response |
| Temperature Rating | 450.0 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Note 1 | 0.2500-28 |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.250 |
| Treatment | Passivated |
| Type | Self-Locking Nut |
| Washer Outside Diameter | 0.434 |
| Washer Thickness | 0.020 |
| Weight | .005 lb |
| Width Across Flats | Between 0.305 inches and 0.313 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 NAS1805-4. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error