bolts › machine bolts
MS9558-24
Military Standard Bolt
Description
Fastener Length: 1-3/4", Thread: 1/4-24, Thread Length: 59/64"
Specifications
| Extended Washer Diameter | 0.500 |
|---|---|
| Extended Washer Thickness | 0.070 inches minimum and 0.080 inches maximum |
| Fastener Length | 1.750 |
| Features Provided | Finished head |
| Grip Length | 0.815 inches minimum and 0.875 inches maximum |
| Hardness Rating | 248.0 brinell standard minimum and 341.0 brinell standard maximum |
| Head Height | 0.375 |
| Head Style | Double hexagon w/hole |
| Length | 1 3/4 |
| Material | Iron |
| Material Specification | Ams 5735 assn std single material response |
| Min. Tensile Strength (psi) | 130000 pounds per square inch |
| Minimum Yield Strength | 85000 pounds per square inch |
| Surface Finish | 32.0 microinches threads, 63.0 microinches bearing surface of head, 63.0 microinches grip |
| Thread Diameter | 0.312 |
| Thread Direction | Right-hand |
| Thread Length | 0.875 inches minimum and 0.935 inches maximum |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series Designator | UNS |
| Thread Size | 1/4 |
| Width Between Flats | 0.367 inches minimum and 0.376 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
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Catalog data updated 2026-07-05. Report a data error