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MS9491-11
Military Standard Machine Bolt
Description
Fastener Length: 15/16", Thread: 5/16-24, Thread Length: 27/32
Specifications
| Fastener Length | 0.938 |
|---|---|
| Features Provided | Finished head |
| Grip Length | 0.088 inches minimum and 0.108 inches maximum |
| Hardness Rating | 248.0 brinell standard minimum and 341.0 brinell standard maximum |
| Head Height | 0.188 |
| Head Style | Hexagon Head |
| Length | 15/16 |
| Material | Iron |
| Material Specification | Ams 5731 assn std single material response |
| Min. Tensile Strength (psi) | 130000 pounds per square inch |
| Minimum Yield Strength | 85000 pounds per square inch |
| Surface Finish | 125.0 microinches top of head, 32.0 microinches bearing surface of head, 32.0 microinches grip, 32.0 microinches threads |
| Thread Class | 3a |
| Thread Diameter | 0.312 |
| Thread Direction | Right-hand |
| Thread Length | 0.830 inches minimum and 0.850 inches maximum |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
| Width Between Flats | 0.492 inches minimum and 0.502 inches maximum |
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 MS9491-11. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error