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MS21045-L7
Military Standard Locknut
Description
Locknut part number MS21045-L7
Specifications
| Bearing Surface Finish | 125.0 microinches |
|---|---|
| Bearing Surface Type | Chamfered |
| Countersink Angle | 88.0 degrees nut |
| Locking Feature | Prevailing torque all metal design |
| Lubrication | Dry film lubricant |
| Material | Steel |
| Nut Height | 0.435 mils and 0.469 centimeters |
| Nut Style | Hexagon |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416 federal specification single treatment response |
| Temperature Rating | 450.0 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.438 |
| Width Across Flats | Between 0.679 inches and 0.690 inches |
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- MS21044D7 MS 7/16-20 · Aluminum
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Catalog data updated 2026-07-05. Report a data error