nuts › self-locking hexagon nuts
MS21045-16
Military Standard Locking Hexagon Nut Self
Description
Thread Size: 1", Nut Height: 1-1/8", Head Width: 1-3/8", locknut, MS21045 series nut
Specifications
| Bearing Surface Finish | 125.0 microinches |
|---|---|
| Bearing Surface Type | Chamfered or washer faced |
| Countersink Angle | 88.0 degrees nut |
| Locking Feature | Prevailing torque all metal design |
| Lubrication | Soluble lubricant |
| Material | Steel |
| Nut Height | Between 1.010 inches and 1.141 inches |
| Nut Style | Hexagon |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Cl 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 Qty | 12 |
| Thread Qty Per Inch (tpi) | 12 |
| Thread Series | Unjf (fine thread with external controlled root radius) |
| Thread Size | 1.000 |
| Width Across Flats | Between 1.427 inches and 1.440 inches |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
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.
- MS21044N16 MS #1-12 · Steel
- MS21045L16 MS #1-12 · Steel
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error