bolts › internal wrenching bolts
MS20004-23
Military Standard Internal Wrenching Bolt
Description
Fastener Length: 1-15/16", Thread: 1/4-28, Head Width: 3/16", Thread Length: 33/64", MS20004 series bolt
Specifications
| Fastener Length | 1.922 inches minimum and 1.952 inches maximum |
|---|---|
| Hardness Rating | 34.0 rockwell c minimum and 40.0 rockwell c maximum |
| Head Diameter | 0.428 inches minimum and 0.438 inches maximum |
| Head Height | 0.240 inches minimum and 0.260 inches maximum |
| Head Style | Bevel-conical |
| Internal Drive Style | Hexagon |
| Length | 1 15/16 |
| Material | Steel |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,type 2,class 2 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.475 inches minimum and 0.525 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNF |
| Thread Size | 1/4 |
| Width Across Flats | 0.188 inches minimum and 0.190 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 MS20004-23. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error