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MS21044-C8
Military Standard Locking Hexagon Nut Self
Description
MS 21044-C8 Self-Locking Hexagon Nut Regular Pattern
Specifications
| Bearing Surface Finish | 125 microinches |
|---|---|
| Bearing Surface Type | Chamfered or washer faced |
| Countersink Angle | 88 degrees nut |
| Hexagon Size - Across Flats | 3/4 |
| Hexagon Size - Thick | .610 (Max.) |
| Locking Device | All-Metal Insert |
| Locking Feature | Prevailing torque with nonmetallic insert |
| Lubrication | Soluble lubricant |
| Material | CRES |
| 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 |
| Nut Height | Between 0.575 inches and 0.610 inches |
| Nut Style | Hexagon |
| Size | 1/2-20 |
| Surface Treatment | Passivate except insert |
| Surface Treatment Specification | Qq-p-35 federal specification single treatment response except insert |
| Temperature Rating | 250.0 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.50 |
| Width Across Flats | Between 0.741 inches and 0.752 inches |
Other sizes
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Catalog data updated 2026-07-05. Report a data error