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MS9209-28
Military Standard Machine Bolt
Description
Fastener Length: 2-1/64", Thread: 1/4-28, Thread Length: 25/32
Specifications
| Extended Washer Diameter | 0.438 |
|---|---|
| Extended Washer Thickness | 0.060 inches minimum and 0.070 inches maximum |
| Fastener Length | 2.000 |
| Grip Length | 1.190 inches minimum and 1.250 inches maximum |
| Hardness Rating | 42.0 rockwell c minimum and 46.0 rockwell c maximum |
| Head Height | 0.330 |
| Head Style | Double hexagon w/hole |
| Material | CRES |
| Material Specification | Ams 6304 assn std single material response |
| Surface Treatment | Nickel and cadmium |
| Surface Treatment Specification | Ams 2416 assn std single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.780 |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
| Width Between Flats | 0.305 inches minimum and 0.315 inches maximum |
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 MS9209-28. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error