6/8 fields identicalno dimensional differences
DIN 931 vs ISO 4014
Within this database the two standards list identical nominal dimensions for every overlapping size, so they are interchangeable for most purchasing purposes. Tolerances, marking requirements and material specifications are defined separately by each standard body and should still be checked.
Specification comparison
| Specification | DIN 931 | ISO 4014 | Verdict |
|---|---|---|---|
| Standard body | DIN | ISO | differs |
| Title | Hexagon Head Bolt — Partial Thread | Hexagon Head Bolt — Partial Thread, Product Grade A/B | differs |
| Fastener type | Hexagon head bolt | Hexagon head bolt | identical |
| Head type | Hexagon head | Hexagon head | identical |
| Drive | External hexagon | External hexagon | identical |
| Size range | M4 – M24 | M4 – M24 | identical |
| Number of listed sizes | 12 | 12 | identical |
| Thread standard length defined | Yes | Yes | identical |
Dimension differences by sizecomputed from the tables in this database
| Size | Difference in this database |
|---|---|
| M4 | identical across listed dimensions |
| M5 | identical across listed dimensions |
| M6 | identical across listed dimensions |
| M8 | identical across listed dimensions |
| M10 | identical across listed dimensions |
| M12 | identical across listed dimensions |
| M14 | identical across listed dimensions |
| M16 | identical across listed dimensions |
| M18 | identical across listed dimensions |
| M20 | identical across listed dimensions |
| M22 | identical across listed dimensions |
| M24 | identical across listed dimensions |
Rows shaded amber differ between the two standards. Substitution should be checked against the affected sizes rather than assumed from the equivalence alone.