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MS9558-16
Military Standard Machine Bolt
Description
Fastener Length: 1-1/4", Thread: 1/4-24, Thread Length: 59/64"
Specifications
| End Application | 1055-01-450-4243 |
|---|---|
| Extended Washer Diameter | 0.500 |
| Extended Washer Thickness | 0.070 |
| Fastener Length | 1.312 |
| Grip Diameter | Between 0.280 inches and 0.290 inches |
| Grip Length | Between 0.378 inches and 0.438 inches |
| Hardness Rating | 24.0 rockwell c and 35.0 rockwell c |
| Head Height | 0.348 |
| Head Style | Double hexagon w/hole |
| Length | 1 1/4 |
| Material | Iron |
| Material Specification | Ams 5731-85 assn standard single material response |
| Min. Tensile Strength (psi) | 130000 pounds per square inch |
| Minimum Yield Strength | 85000 pounds per square inch |
| Thread Class | 3a |
| Thread Diameter | 0.312 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.874 inches and 0.934 inches |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) |
| Thread Size | 1/4 |
| Width Between Flats | 0.375 |
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 MS9558-16. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error