nuts › plain hexagon nuts
MS51969-3
Military Standard Nut
Description
MS 51969-3 Plain Hexagon Nut - Finished Pattern
Specifications
| Bearing Surface Type | Chamfered or washer faced |
|---|---|
| Finish | Black Oxide |
| Hexagon Size - Across Flats | 9/16 |
| Hexagon Size - Thick | 21/64 |
| Material | Brass |
| Material Specification | Qq-b-637 fed spec single material response or qq-b-639 fed spec single material response |
| Nut Height | 0.320 inches minimum and 0.337 inches maximum |
| Nut Style | Hexagon |
| Size | 3/8-16 |
| Surface Treatment | Black oxide |
| Surface Treatment Specification | Mil-f-495 mil spec single treatment response |
| Thread Class | 2b |
| Thread Direction | Right-hand |
| Thread Qty | 16 |
| Thread Qty Per Inch (tpi) | 16 |
| Thread Series | UNC |
| Thread Size | 0.375 |
| Width Across Flats | 0.5510 inches minimum and 0.5625 inches maximum |
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.
- MS35690-604 MS 3/8-16 · Steel
- MS35690-611 MS 3/8-16 · Brass
- MS51967-8 MS 3/8-16 · Steel
- MS51967-9 MS 3/8-16 · Steel
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error