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MS9556-05
12 Point Machine Bolt
Description
12 Point Machine Bolt
Specifications
| Country of Origin | USA |
|---|---|
| Extended Washer Diameter | 0.375 |
| Extended Washer Thickness | Between 0.040 inches and 0.050 inches |
| Fastener Length | 0.438 |
| Features | Extended Washer Head |
| Features Provided | Finished head |
| Grip Length | Between 0.072 inches and 0.092 inches |
| Grip Range | 0.072 to 0.092 in |
| Hardness Rating | 248.0 brinell standard and 341.0 brinell standard |
| Head Height | 0.260 |
| Head Style | Double hexagon w/hole |
| Head Type | Double Hexagon |
| Industry Standards/Certification | MS9556 |
| Length | 0.438 in, 7/16 |
| Material | Iron |
| Material Specification | Ams 5731 assn standard single material response |
| Min. Tensile Strength (psi) | 130000 pounds per square inch |
| Minimum Yield Strength | 85000 pounds per square inch |
| NIIN | 00-104-5183 |
| NSN | 5306-00-104-5183 |
| Surface Finish | 32.0 microinches bearing surface of head, 32.0 microinches grip, 32.0 microinches threads |
| Thread Class | 3a |
| Thread Diameter | 0.190 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.346 inches and 0.366 inches |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.1900-32, 10 |
| Weight | .008 lb |
| Width Between Flats | Between 0.243 inches and 0.251 inches |
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS9556-05. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error