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MS21044C4
Military Standard Locking Hexagon Nut Self
Description
Nut
Specifications
| Alternate Part Number | 79NE048 |
|---|---|
| Bearing Surface Finish | 125 microinches |
| Bearing Surface Type | Chamfered or washer faced |
| Countersink Angle | 88 degrees |
| Height | Between 0.240 inches and 0.360 inches |
| Locking Feature | Prevailing torque with nonmetallic insert |
| Lubrication | Soluble lubricant |
| Material | Steel |
| Material Specification | Ams 5688 assn standard 1st material response nut or ams 5640 assn standard 2nd material response nut or ams 5647 assn standard 3rd material response nut |
| NIIN | 00-889-2589 |
| NSN | 5310-00-889-2589 |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 federal specification single treatment response except insert |
| Temperature Rating | 250 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.250 |
| Weight | 0.0085 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
No interchangeable or dimensionally similar parts are on record for MS21044C4. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error