Specifications
| Material | Mild steel |
| Grade | ASTM A307 |
| Drive / head | Hex socket (Allen) |
| Diameters | 3/8" to 1" (M10–M24) |
| Lengths | 1" to 6" |
| Thread | Coarse |
| Finish | Black oxide / zinc |
Description
ASTM A-307 Hex Cap Screw — ASTM A307 hex socket (allen) for machinery, tooling, dies and high-strength assembly. Stocked across common sizes and lengths.
A307 hex cap screws are supplied in a wide range of diameters and lengths, with matching nuts. Knowing whether a job needs a general-purpose A307 or a structural A325 is the key specification decision, and using the right one keeps both cost and safety in balance. See the specifications below for available sizes.
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