bolts › shear bolts
MS21250-05018
Bolt
Description
Length: 1.724", grip: 1.125", thread: 5/16-24, external wrenching, flanged, 12 point, cadmium plated steel alloy, undrilled head, MS21250 series bolt
Specifications
| Country of Origin | USA |
|---|---|
| Extended Washer Diameter | Between 0.521 inches and 0.531 inches |
| Extended Washer Thickness | Between 0.072 inches and 0.092 inches |
| Fastener Length | Between 1.714 inches and 1.734 inches |
| Grip Diameter | Between 0.3110 inches and 0.3120 inches |
| Grip Length | Between 1.115 inches and 1.135 inches |
| Hardness Rating | 39.0 rockwell c and 43.0 rockwell c |
| Head Height | Between 0.338 inches and 0.358 inches |
| Head Style | Double hexagon w/hole |
| Material | Steel |
| Material Specification | Mil-s-5626 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-8503 military specification 3rd material response or mil-s-6098 military specification 4th material response or mil-s-6049 military specification 5th material response |
| Min. Tensile Strength (psi) | 180000 pounds per square inch |
| NIIN | 00-949-3769 |
| NSN | 5306-00-949-3769 |
| Single Shear Strength | 108000 pounds per square inch |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Cl 3 federal specification single treatment response type 2 qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.312 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.579 inches and 0.619 inches |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) |
| Thread Size | 1/4 |
| Weight | 0.055 lb |
| Width Between Flats | Between 0.367 inches and 0.376 inches |
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS21250-05018. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error