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MS21083D12
Military Standard Locknut
Description
Thread Size: 3/4", Nut Height: 27/64", Head Width: 1-3/64"
Specifications
| Bearing Surface Finish | 125.0 microinches |
|---|---|
| Bearing Surface Type | Chamfered or washer faced |
| Countersink Angle | 88.0 degrees minimum nut |
| Locking Feature | Prevailing torque with nonmetallic insert |
| Lubrication | Soluble lubricant |
| Material | Aluminum |
| Nut Height | 0.422 inches maximum |
| Nut Style | Hexagon |
| Surface Treatment | Anodize except insert or chromate except insert |
| Surface Treatment Specification | Mil-a-8625 mil spec 1st treatment response except insert or mil-c-5541 mil spec 2nd treatment response except insert |
| Temperature Rating | 250.0 deg fahrenheit maximum |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 16 |
| Thread Qty Per Inch (tpi) | 16 |
| Thread Series | UNJF |
| Thread Size | 0.750 |
| Width Across Flats | 1.052 inches minimum and 1.064 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- MS21083D04
- MS21083D8
- MS21083D9
- MS21083D12
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS21083D12. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error