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MS21044N4
Military Standard Locking Hexagon Nut Self
Description
Nut
Specifications
| Alternate Part Number | AN365-428 |
|---|---|
| Bearing Surface Finish | 125.0 microinches |
| Bearing Surface Type | Chamfered or washer faced |
| Counterbore Diameter | 0.253 inches nut and 0.293 inches nut |
| Countersink Angle | 88.0 degrees nut |
| Locking Feature | Prevailing torque with nonmetallic insert |
| Lubrication | Soluble lubricant |
| Material | Steel |
| Nut Height | Between 0.240 inches and 0.360 inches |
| Nut Style | Hexagon |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Cl 3 federal specification single treatment response nut type 2 qq-p-416 |
| Temperature Rating | 250.0 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | Unf (fine thread) |
| Thread Size | 0.250 |
| Weight | .008 lb |
| Width Across Flats | Between 0.430 inches and 0.439 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.
- MS17830-4F MS 1/4-28 · CRES
- MS17830-4F316 MS 1/4-28 · CRES
- MS21044B4 MS 1/4-28 · Copper
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Catalog data updated 2026-07-05. Report a data error