bolts › shear bolts
MS21250-04050
Military Standard Shear Bolt
Description
Fastener Length: 3-41/64", Thread: 1/4-28, Thread Length: 17/32
Specifications
| Extended Washer Diameter | Between 0.428 inches and 0.438 inches |
|---|---|
| Extended Washer Thickness | Between 0.059 inches and 0.079 inches |
| Fastener Length | Between 3.627 inches and 3.647 inches |
| Grip Diameter | Between 0.2485 inches and 0.2495 inches |
| Grip Length | Between 3.115 inches and 3.135 inches |
| Hardness Rating | 39.0 rockwell c and 43.0 rockwell c |
| Head Height | Between 0.290 inches and 0.310 inches |
| Head Style | Double hexagon w/hole |
| Material | Steel |
| Min. Tensile Strength (psi) | 180000 pounds per square inch |
| Surface Finish | 32.0 microinches bearing surface of head, 32.0 microinches grip |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 type 2 cl 2 federal specification single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.492 inches and 0.532 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 0.302 inches and 0.322 inches |
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS21250-04050. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error