nuts › plain hexagon nuts
MS51971-7
Military Standard Plain Hexagon Nut
Description
MS 51971-7 Plain Hexagon Nut - Finished Pattern
Specifications
| Bearing Surface Type | Chamfered or washer faced |
|---|---|
| Hexagon Size - Across Flats | 15/16 |
| Hexagon Size - Thick | 35/64 |
| Material | CRES |
| Material Specification | Fed 66 federal standard single material response |
| Nut Height | Between 0.535 inches and 0.559 inches |
| Nut Style | Hexagon |
| Size | 5/8-11 |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 federal specification single treatment response |
| Thread Class | 2b |
| Thread Direction | Right-hand |
| Thread Qty Per Inch (tpi) | 11 |
| Thread Series | Unc (coarse thread) |
| Thread Size | 0.625 |
| Width Across Flats | Between 0.9220 inches and 0.9375 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.
- MS51967-20 MS 5/8-11 · Steel
- MS51967-21 MS 5/8-11 · Steel
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error