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MS21250-06010
1.270 Inch Total Length MS21250 Hexagon Socket Head External Wrenching Bolt
Description
Fastener Length: 1-17/64", Thread: 3/8-24, Thread Length: 41/64", 12 point, MS21250 series bolt
Specifications
| Alternate Part Number | MS2125006010 |
|---|---|
| Country of Origin | USA |
| Extended Washer Diameter | 0.639 inches minimum and 0.649 inches maximum |
| Extended Washer Thickness | 0.091 |
| Fastener Length | 1.270 |
| Features | External Wrenching |
| Grip | 0.625 in |
| Grip Diameter | 0.3735 inches minimum and 0.3745 inches maximum |
| Grip Length | 0.615 inches minimum and 0.635 inches maximum |
| Grip Tolerance | ±0.010 in |
| Hardness Rating | 39.0 rockwell c minimum and 43.0 rockwell c maximum |
| Head Height | 0.388 |
| Head Style | Double hexagon w/hole |
| Head Type | 12 Point Hexagon, Flanged |
| Industry Standards/Certification | MS21250 |
| Length | 1 17/64 |
| Material | Steel |
| Material Specification | Mil-s-5000 mil spec 1st material response or mil-s-6049 mil spec 2nd material response or mil-s-8503 mil spec 3rd material response or mil-s-5626 mil spec 4th material response |
| Min. Tensile Strength (psi) | 180000 pounds per square inch |
| Pressure | 180 ksi |
| Suggested Nuts for the Bolts | 42FLW |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,ty 2,class 3 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.375 |
| Thread Direction | Right-hand |
| Thread Length | 0.635 inches minimum and 0.655 inches maximum |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series Designator | UNJF |
| Thread Size | 0.3750-24, 3/8 |
| Total Length | 1.270 in |
| Weight | .005 lb |
| Width Between Flats | 0.430 inches minimum and 0.439 inches maximum |
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- NAS626-10 NAS 24.00-24 · 0.073 in · Double hexagon w/hole · Steel
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Catalog data updated 2026-07-05. Report a data error