Deterministic evaluation of fastener standards based on geometry, material, and compliance constraints. Complete engineering specifications across all 54 size/grade/finish variants.
Socket head cap screws, imperial series. Nominal dimensions for width across flats (s) and head height (k) across 9 metric sizes. Values in millimetres.
| Size | Width Across Flats (s) | Head Height (k) |
|---|---|---|
| 1/4 | 9.52 | 6.35 |
| 5/16 | 11.13 | 7.92 |
| 3/8 | 14.27 | 9.52 |
| 7/16 | 15.88 | 11.13 |
| 1/2 | 19.05 | 12.7 |
| 5/8 | 23.83 | 15.88 |
| 3/4 | 28.57 | 19.05 |
| 7/8 | 33.32 | 22.22 |
| 1-1/4 | 47.62 | 31.75 |
ASME B18.3 is dimensionally cross-referenced with the following standards:
| Standard | Name | Status | Risk Note |
|---|---|---|---|
| ASME B18.3, DIN 7980 | Equivalent standards in cluster | IN CLUSTER | — |
| Related Standard | Relationship | Confidence |
|---|---|---|
| DIN 7980 | Cross-system | 0.60 |
ASME B18.3 in the concept layer — Fastener Knowledge:
Select a size to view its complete engineering data — including dimensional tolerances, material grades, mechanical properties, and surface finish options.
Non-canonical standard paths are automatically redirected to their canonical ISO equivalents via the Engineering Data Authority Lock. Equivalent standards: ASME B18.3, DIN 7980
| Source (Non-Canonical) | Target (Canonical Route) |
|---|---|
| No redirects — this is the canonical standard | |
b42e32c0e2d46906e879f035359b45c27e70cc6253166e193bc3859bf802fcd6
FROZEN: 2026-08-17 20:13:55
ASSET: standard_map_core.csv
CLUSTER: [ASME B18.3, DIN 7980]
ASME B18.3 Socket Head Cap Screw per ASME B18.3 specification, available in Grade 5 grade with Plain finish. Engineered for industrial OEM applications requiring 827.0 MPa tensile strength and reliable long-term fastening performance.