bolts › machine bolts
MS27576-4-16
Military Standard Machine Bolt
Description
Fastener Length: 1-7/16", Thread: 1/4-28, Thread Length: 21/64
Specifications
| Fastener Length | Between 1.418 inches and 1.438 inches |
|---|---|
| Grip Diameter | Between 0.2483 inches and 0.2492 inches |
| Grip Length | Between 1.00 inches and 1.016 inches |
| Hardness Rating | 36.0 rockwell c and 41.0 rockwell c |
| Head Height | Between 0.126 inches and 0.141 inches |
| Head Style | Dished hexagon |
| Material | Steel |
| Material Specification | Mil-b-83050 military specification single material response |
| Shank Unthreaded Hole Diameter | 0.076 inches first hole and 0.086 inches first hole |
| Special Features | W/retaining element on shank |
| Surface Finish | 63.0 microinches grip, 63.0 microinches surface of head |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 type 2 class 2 federal specification all treatment responses |
| Thread Class | 3a |
| Thread Diameter | 0.25 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.282 inches and 0.333 inches |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) |
| Thread Size | 1/4 |
| Width Between Flats | Between 0.430 inches and 0.439 inches |
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 MS27576-4-16. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error