bolts › machine bolts
ST3M753-8-61
Machine Bolt
Description
Fastener Length: 2-5/16", Thread: 1/4-28, Thread Length: 27/64
Specifications
| Fastener Length | 2.293 inches minimum and 2.313 inches maximum |
|---|---|
| Grip Length | 1.875 inches minimum and 1.891 inches maximum |
| Hardness Rating | 36.0 rockwell c minimum and 41.0 rockwell c maximum |
| Head Height | 0.126 inches minimum and 0.141 inches maximum |
| Head Style | Crowned hexagon |
| Length | 2 5/16 |
| Material | Steel |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416,type ii,class 2 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.418 inches minimum and 0.422 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
| Width Between Flats | 0.488 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- ST3M753-8-21
- ST3M753-8-36
- ST3M753-8-61
- ST3M753-8-82
Cross-reference
No interchangeable or dimensionally similar parts are on record for ST3M753-8-61. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error