standardDIN 931
statusHistorical
P · mm1.75
s · mm19
More dimensions
e · mm21.1
k · mm7.5
threadLength-
b · mm30
b · mm36
b · mm49
mass62.35
Execution standard reference
M12 x 55 Hexagon Head Bolt — DIN 931 / ISO 4014 / GB/T 5782
Recorded dimensions for M12 x 55 against DIN 931 / ISO 4014 / GB/T 5782. Where these standards differ, both values are shown so the correct one can be confirmed before ordering. Packing quantity, stock status and mechanical property class are confirmed in the quotation. Column symbols: P = thread pitch; s = width across flats; e = width across corners; k = head height; kg / 1000 pcs = theoretical weight calculated from the standard geometry.
Hexagon Head BoltCurrent standardVerified dimensional data
Dimensional reference
Shows dimensions already stored in the standard library. Missing values are not filled automatically.
| standardStandard | statusStatus | PPitch · mm | sAcross flats · mm | eAcross corners · mm | kHead height · mm | threadLengththreadLength (mm) | bL ≤ 125 · mm | b125 < L ≤ 200 · mm | bL > 200 · mm | masskg / 1000 pcs |
|---|---|---|---|---|---|---|---|---|---|---|
| DIN 931 | Historical | 1.75 | 19 | 21.1 | 7.5 | - | 30 | 36 | 49 | 62.35 |
| ISO 4014 | Current | 1.75 | 18 | 20.03 | 7.5 | - | 30 | 36 | 49 | 60.61 |
| GB/T 5782 | Current | 1.75 | 18 | 20.03 | 7.5 | - | 30 | 36 | 49 | 60.61 |
standardISO 4014
statusCurrent
P · mm1.75
s · mm18
More dimensions
e · mm20.03
k · mm7.5
threadLength-
b · mm30
b · mm36
b · mm49
mass60.61
standardGB/T 5782
statusCurrent
P · mm1.75
s · mm18
More dimensions
e · mm20.03
k · mm7.5
threadLength-
b · mm30
b · mm36
b · mm49
mass60.61
Verified differences from related standards
Only dimensions present in complete, verified standard data are listed. Related standards are not automatically interchangeable.
| Size | Dimension | Compared values |
|---|---|---|
| M12 | s | ISO 4014 18 / DIN 931 19 |
| M12 | e | ISO 4014 20.03 / DIN 931 21.1 |
