bolts › machine bolts
MS9558-11
Military Standard Machine Bolt
Description
Fastener Length: 15/16", Thread: 5/16-24, Thread Length: 27/32", MS9558 series bolt
Specifications
| Extended Washer Diameter | 0.500 |
|---|---|
| Extended Washer Thickness | 0.070 inches minimum |
| Fastener Length | 0.938 |
| Head Height | 0.348 |
| Head Style | Double hexagon extended washer |
| Length | 15/16 |
| Material | Iron |
| Material Specification | Ams 5731 assn std single material response |
| Thread Class | 3a |
| Thread Diameter | 0.3125 |
| 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 | 5/16 |
| Width Between Flats | 0.3750 |
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 MS9558-11. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error