bolts › internal wrenching bolts
MS20004-34
Military Standard Internal Wrenching Bolt
Description
Fastener Length: 2-5/8", Thread: 1/4-28, Head Width: 3/16", Thread Length: 33/64", MS20004 series bolt
Specifications
| Drive Style | Hexagon |
|---|---|
| Fastener Length | Between 2.610 inches and 2.640 inches |
| Hardness Rating | 34.0 rockwell c and 40.0 rockwell c |
| Head Diameter | Between 0.428 inches and 0.438 inches |
| Head Height | 0.250 |
| Head Style | Bevel-conical |
| Internal Drive Style | Hexagon |
| 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) | 160000 pounds per square inch |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | 00-p-416 type 2 cl 3 federal specification all treatment responses |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.475 inches and 0.525 inches |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNF |
| Thread Series Designator | Unf (fine thread) |
| Thread Size | 1/4 |
| Width Across Flats | Between 0.188 inches and 0.190 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 MS20004-34. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error