bolts › machine bolts
MS27576-4-34
Military Standard Bolt
Description
Fastener Length: 2-9/16", Thread: 1/4-28, Thread Length: 21/64"
Specifications
| Distance From Head Largest Bearing Surface To Shank Hole Center | 2.443 inches minimum first hole and 2.473 inches maximum first hole |
|---|---|
| Fastener Length | 2.543 inches minimum and 2.563 inches maximum |
| Grip Diameter | 0.2483 inches minimum and 0.2492 inches maximum |
| Grip Length | 2.125 inches minimum and 2.141 inches maximum |
| Hardness Rating | 36.0 rockwell c minimum and 41.0 rockwell c maximum |
| Head Height | 0.120 inches minimum and 0.141 inches maximum |
| Head Style | Dished hexagon |
| Length | 2 9/16 |
| Material | Steel |
| Material Specification | Mil-b-83050 mil spec single material response |
| Shank Unthreaded Hole Diameter | 0.076 inches minimum first hole and 0.086 inches maximum first hole |
| Special Features | W/retaining element on shank |
| Surface Finish | 63.0 microinches bearing surface of head, 63.0 microinches grip |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 ty 2 cl 2 fed spec all treatment responses |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.282 inches minimum and 0.333 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
| Width Between Flats | 0.430 inches minimum and 0.439 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 MS27576-4-34. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error