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MS9557-10
12 Point Machine Bolt
Description
12 Point Machine Bolt
Specifications
| Country of Origin | USA |
|---|---|
| Extended Washer Diameter | 0.438 |
| Extended Washer Thickness | 0.060 inches minimum and 0.070 inches maximum |
| Fastener Length | 0.750 |
| Features Provided | Finished head |
| Grip Length | 0.079 inches minimum and 0.099 inches maximum |
| Hardness Rating | 248.0 brinell standard minimum and 341.0 brinell standard maximum |
| Head Height | 0.300 |
| Head Style | Double hexagon w/hole |
| Length | 3/4 |
| 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 |
| NIIN | 00-113-3769 |
| NSN | 5306-00-113-3769 |
| Surface Finish | 32.0 microinches bearing surface of head, 32.0 microinches grip, 32.0 microinches threads |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.651 inches minimum and 0.671 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
| Weight | 0.017 lb |
| Width Between Flats | 0.305 inches minimum and 0.313 inches maximum |
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS9557-10. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error