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MS21262-9
Military Standard Screw
Description
Fastener Length: 5/16", Thread: 8-32, Head Width: 9/64", Thread Length: 5/16
Specifications
| Drive Style | Hexagon |
|---|---|
| Fastener Length | Between 0.297 inches and 0.327 inches |
| Hardness Rating | 36.0 rockwell c and 45.0 rockwell c |
| Head Diameter | Between 0.262 inches and 0.270 inches |
| Head Height | Between 0.159 inches and 0.164 inches |
| Head Style | Flat chamfer |
| Internal Drive Style | Hexagon |
| Length | 5/16 |
| Locking Feature | Strip threads |
| Material | Steel |
| Material Specification | 66 federal standard single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Minimum Yield Strength | 130000 pounds per square inch |
| Surface Treatment | Cadmium and chromate |
| Thread Class | 3a |
| Thread Diameter | 0.164 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.265 inches and 0.327 inches |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series | UNC |
| Thread Series Designator | Unc (coarse thread) |
| Thread Size | 8 |
| Width Across Flats | Between 0.140 inches and 0.142 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 MS21262-9. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error