standardDIN 933
statusHistorical
P · mm2.5
aMax7.5
More dimensions
cMin0.2
cMax0.8
daMax22.4
bearingDiameterMin28.2
e · mm33.53
k · mm12.5
kMin12.28
headHeightMax12.72
kPrimeMin8.5
rMin0.8
s · mm30
sMin29.67
Execution standard reference
M20 x 40 Hexagon Head Screw — Fully Threaded — DIN 933 / ISO 4017 / GB/T 5783
M20 x 40 is listed in the confirmed supply specifications of the products shown below. Dimensions are referenced against DIN 933 / ISO 4017 / GB/T 5783; 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; e = width across corners; k = head height; s = width across flats; s min = width across flats, minimum.
Hexagon Head Screw — Fully ThreadedCurrent standardVerified dimensional data
Dimensional reference
Shows dimensions already stored in the standard library. Missing values are not filled automatically.
| standardStandard | statusStatus | PPitch · mm | aMaxaMax (mm) | cMincMin (mm) | cMaxcMax (mm) | daMaxdaMax (mm) | bearingDiameterMinbearingDiameterMin (mm) | eAcross corners · mm | kHead height · mm | kMinkMin (mm) | headHeightMaxheadHeightMax (mm) | kPrimeMinkPrimeMin (mm) | rMinrMin (mm) | sAcross flats · mm | sMins min (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DIN 933 | Historical | 2.5 | 7.5 | 0.2 | 0.8 | 22.4 | 28.2 | 33.53 | 12.5 | 12.28 | 12.72 | 8.5 | 0.8 | 30 | 29.67 |
| ISO 4017 | Current | 2.5 | - | - | - | - | - | 33.53 | 12.5 | - | - | - | - | 30 | - |
| GB/T 5783 | Current | 2.5 | - | - | - | - | - | 33.53 | 12.5 | - | - | - | - | 30 | - |
| ISO 4018 | Current | 2.5 | - | - | - | - | - | 32.95 | 12.5 | - | - | - | - | 30 | - |
standardISO 4017
statusCurrent
P · mm2.5
aMax-
More dimensions
cMin-
cMax-
daMax-
bearingDiameterMin-
e · mm33.53
k · mm12.5
kMin-
headHeightMax-
kPrimeMin-
rMin-
s · mm30
sMin-
standardGB/T 5783
statusCurrent
P · mm2.5
aMax-
More dimensions
cMin-
cMax-
daMax-
bearingDiameterMin-
e · mm33.53
k · mm12.5
kMin-
headHeightMax-
kPrimeMin-
rMin-
s · mm30
sMin-
standardISO 4018
statusCurrent
P · mm2.5
aMax-
More dimensions
cMin-
cMax-
daMax-
bearingDiameterMin-
e · mm32.95
k · mm12.5
kMin-
headHeightMax-
kPrimeMin-
rMin-
s · mm30
sMin-
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 4017 33.53 / ISO 4018 32.95 |
Quote against the correct standard.
Include sizes, material, finish, quantity and required documents.