Engineering reference
DIN ISO Fastener Cross-Reference Chart
DIN to ISO conversion and multi-standard equivalents for bolts, nuts, screws and washers. Search DIN, ISO, ASME, UNI, JIS or DIN EN ISO codes when converting drawings or comparing supplier quotes.
How to use this chart
Search by standard number (DIN 931, ISO 4014) or product type (hex bolt, lock nut). Open any row for the full public equivalent set, linked drawing templates, and related catalog fasteners.
Common DIN → ISO pairs
- DIN 931 → ISO 4014 — hexagon head bolts, partial thread
- DIN 933 → ISO 4017 — hexagon head screws, full thread
- DIN 912 → ISO 4762 — hexagon socket head cap screws
- DIN 934 → ISO 4032 — hexagon nuts
- DIN 125 → ISO 7089 / 7090 — plain washers
STANDARD CROSS-REFERENCECross-reference FAQ
What is a DIN to ISO fastener equivalent?
It is the closest published ISO (or EN ISO) product standard that replaces or aligns with a legacy DIN fastener standard for the same product type — for example DIN 931 with ISO 4014 for partial-thread hex bolts.
Are DIN and ISO fasteners always interchangeable?
Not always. Many pairs are functionally close, but head dimensions, width across flats (notably some M10–M22 sizes), thread length rules and tolerances can differ. Confirm the drawing and property class before substitution.
How should buyers use this cross-reference table?
Use it to map drawing callouts across DIN, ISO, ASME, UNI and JIS, then verify dimensions against the project specification and request matching sizes, material and finish from Eternal Fastener.
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.