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MS21045-8
Military Standard Locking Hexagon Nut Self
Description
Nut
Specifications
| Bearing Surface Finish | 125.0 microinches |
|---|---|
| Bearing Surface Type | Chamfered |
| Countersink Angle | 88.0 degrees nut |
| Features | Regular Height |
| Industry Standards/Certification | MS21045 |
| Locking Feature | Prevailing torque all metal design |
| Lubricant | Non-Dry Lubricant |
| Lubrication | Soluble lubricant |
| Material | Steel |
| Maximum Dimension A | 0.610 in |
| Maximum Dimension B | 0.752 in |
| Minimum Dimension A | 0.575 in |
| Minimum Dimension B | 0.741 in |
| Minimum Dimension C | 0.837 in |
| Minimum Dimension F | 0.221 in |
| NIIN | 00-062-4954 |
| NSN | 5310-00-062-4954 |
| Nut Height | Between 0.575 inches and 0.610 inches |
| Nut Style | Hexagon |
| Service Temperature | 450 ºF |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Class 3 federal specification single treatment response type 2 qq-p-416 |
| Temperature Rating | 450.0 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread MIL-S-8879 | 0.5000-20 |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.500, 7/16-20 |
| Type | Self-Locking Nut |
| Weight | 0.04 lb |
| Width Across Flats | Between 0.741 inches and 0.752 inches |
Other sizes
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Catalog data updated 2026-07-05. Report a data error