Socket head cap screws drive with a hexagon key rather than a spanner, so they can be torqued in recessed counterbores and tight assemblies where no wrench clearance exists. The high strength grades make them the standard choice for machine and tooling assembly.
Supplied in bulk to distributors, importers and hardware brands worldwide, including private-label packaging in the customer's own branding. Non-standard sizes and made-to-drawing variants are produced to order, with a material test certificate on every consignment.
| Product Type | Hexagon socket head cap screw (Allen bolt) |
| Standards | DIN 912, ISO 4762, ASME B18.3 |
| Material Grades | Grade 8.8, 10.9, 12.9 alloy steel; SS 304 (A2-70); SS 316 (A4-70) |
| Size Range (Metric) | M3 to M36 |
| Size Range (Imperial) | #6 to 1-1/2" UNC / UNF |
| Length Range | 6 mm to 300 mm (1/4" to 8") |
| Head / Drive Type | Cylindrical head, hexagon socket drive |
| Finish | Black oxide, zinc plated, zinc flake, passivated stainless; 12.9 supplied black oxide or zinc flake only (hydrogen embrittlement risk) |
| Custom Options | Low head (DIN 7984), button and countersunk socket (ISO 7380 / ISO 10642), nylon patch, made to drawing |
| Certification | Material Test Certificate, EN 10204 3.1 |
| Packaging | Boxed in standard counts, bulk cartons, or private label to customer specification |
