nuts › self-locking hexagon nuts
MS21045C04
Military Standard Locking Hexagon Nut Self
Description
Nut
Specifications
| Bearing Surface Finish | 125.0 microinches |
|---|---|
| Bearing Surface Type | Chamfered or washer faced |
| Counterbore Diameter | 0.116 inches nut and 0.156 inches nut |
| Countersink Angle | 88.0 degrees nut |
| Locking Feature | Prevailing torque all metal design |
| Lubrication | Dry film lubricant |
| Material | CRES |
| NIIN | 00-982-5000 |
| NSN | 5310-00-982-5000 |
| Nut Height | Between 0.133 inches and 0.157 inches |
| Nut Style | Hexagon |
| Temperature Rating | 450.0 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series | Unc (coarse thread) |
| Thread Size | 0.112 |
| Weight | 0.002 lb |
| Width Across Flats | Between 0.243 inches and 0.251 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.
- MS17830-04C MS #4-40 · Plastic
- MS20365-440A MS #4-40 · Plastic
- MS21044C04 MS #4-40 · Steel
- MS21044N04 MS #4-40 · Plastic
- MS21045-04 MS #4-40 · Steel
- MS21046C04 MS #4-40 · CRES
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Catalog data updated 2026-07-05. Report a data error