bolts › machine bolts
MS9491-12
Military Standard Bolt
Description
Fastener Length: 0-1/1", Thread: 5/16-24, Thread Length: 7/8"
Specifications
| Fastener Length | 0.990 inches minimum and 1.010 inches maximum |
|---|---|
| Features Provided | Finished head |
| Grip Length | 0.088 inches minimum and 0.125 inches maximum |
| Head Height | 0.148 |
| Head Style | Hexagon Head |
| Length | 0 63/64 |
| Material | Iron |
| Material Specification | Ams5731 assn std single material response |
| Surface Finish | 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 | 0.875 inches minimum and 0.912 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 MS9491-12. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error