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MS51971-3
Military Standard Plain Hexagon Nut
Description
MS 51971-3 Plain Hexagon Nut - Finished Pattern
Specifications
| Bearing Surface Type | Chamfered or washer faced |
|---|---|
| Hexagon Size - Across Flats | 9/16 |
| Hexagon Size - Thick | 21/64 |
| Material | CRES |
| Nondefinitive Specification/Std Data | 2 type and a style and 2 type and b style |
| Nut Height | Between 0.294 inches and 0.330 inches |
| Nut Style | Hexagon |
| Size | 3/8-16 |
| Surface Treatment | Passivate |
| Thread Class | 2b |
| Thread Direction | Right-hand |
| Thread Qty | 16 |
| Thread Qty Per Inch (tpi) | 16 |
| Thread Series | Unc (coarse thread) |
| Thread Size | 0.375 |
| Width Across Flats | Between 0.606 inches and 0.625 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.
- MS35690-610 MS 3/8-16 · CRES
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Catalog data updated 2026-07-05. Report a data error