Engineering reference
Hexagon head screws, product grade C
Cross-reference for DIN 558 vs ISO 4018 — Hexagon head screws, product grade C. Published equivalents: DIN 558 / ISO 4018 / ASME B18.2.3.1M / UNI 5738 / JIS B1180 / DIN EN ISO 4018. Use this page when converting drawings, checking supplier quotes, or matching catalog products.
| DIN | DIN 558 |
|---|---|
| ISO | ISO 4018 |
| ANSI/ASME | ASME B18.2.3.1M |
| UNI | UNI 5738 |
| JIS | JIS B1180 |
| DIN EN / DIN EN ISO | DIN EN ISO 4018 |
Equivalents are for engineering reference only. * marks a related standard that is not directly interchangeable. Dimensional tolerances, property classes and thread systems can differ — always confirm against the project specification before substitution.
Catalog fasteners commonly specified against this standard family. Confirm size, material and property class against your drawing before ordering.
ISO 4017 / DIN 933 / SAE J42910B21 / 40Cr / SCM435 / 4140 / 8.8 / 10.9 / 12.9
Full-thread high-strength hex head bolts per ISO 4017 / DIN 933 in 10B21 / SCM435, 8.8 / 10.9 / 12.9.
ASTM A563 / ASTM F3125 refASTM A563 Grade DH / 1045 / 35K / Grade DH / Grade 10 equivalent
ASTM A563 structural hex nuts for ASTM F3125 high-strength structural bolting.
EN 14399-6 / DIN 691640Cr / 42CrMo / 42CrMo4 / 300HV / 350HV
EN 14399-6 structural washers for preloaded steel and wind tower bolting systems.
DIN 127 / ISO 798065Mn Steel / —
Spring Washers per DIN 127 in 65Mn Steel, — grade.
DIN 934 / ISO 4032 / SAE J99510B21 / 35K / Grade 8 / 10 / 12
Hex Nuts per DIN 934 in 10B21 / 35K, Grade 8 / 10 / 12 grade.
Send DIN 558 (or equivalent), sizes, material, quantity and surface finish — we quote drawing-based and standard fasteners for export projects.
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