standardDIN 931
statusHistorical
P · mm2.5
s · mm30
More dimensions
e · mm33.53
k · mm12.5
threadLength-
b · mm46
b · mm52
b · mm65
Execution standard reference
M20 x 180 Hexagon Head Bolt — DIN 931 / ISO 4014 / GB/T 5782
M20 x 180 is listed in the confirmed supply specifications of the products shown below. Dimensions are referenced 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.
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 |
|---|---|---|---|---|---|---|---|---|---|
| DIN 931 | Historical | 2.5 | 30 | 33.53 | 12.5 | - | 46 | 52 | 65 |
| ISO 4014 | Current | 2.5 | 30 | 33.53 | 12.5 | - | 46 | 52 | 65 |
| GB/T 5782 | Current | 2.5 | 30 | 33.53 | 12.5 | - | 46 | 52 | 65 |
| ISO 4016 | Current | 2.5 | 30 | 32.95 | 12.5 | - | 46 | 52 | 65 |
standardISO 4014
statusCurrent
P · mm2.5
s · mm30
More dimensions
e · mm33.53
k · mm12.5
threadLength-
b · mm46
b · mm52
b · mm65
standardGB/T 5782
statusCurrent
P · mm2.5
s · mm30
More dimensions
e · mm33.53
k · mm12.5
threadLength-
b · mm46
b · mm52
b · mm65
standardISO 4016
statusCurrent
P · mm2.5
s · mm30
More dimensions
e · mm32.95
k · mm12.5
threadLength-
b · mm46
b · mm52
b · mm65
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 |
|---|---|---|
| M20 | e | ISO 4014 33.53 / ISO 4016 32.95 |
Available products
Quote against the correct standard.
Include sizes, material, finish, quantity and required documents.