dST2.2
P · mm0.8
aMax1.6
dkTheoreticalMax4.4
More dimensions
dk · mm3.8
dkMin3.5
k · mm1.1
rMax0.8
driveNo0
driveRefH1.9
driveDepthMaxH1.2
driveDepthMinH0.9
driveRefZ2
driveDepthMaxZ1.2
driveDepthMinZ0.95
pointC2
pointF1.6
pointR—
Execution standard reference
GB/T 846 Cross-recessed countersunk head tapping screws
Cross-recessed countersunk head tapping screws
screwEdition: 2017Current standardDimensions available
Dimensional reference
Shows dimensions already stored in the standard library. Missing values are not filled automatically.
GB/T 846 dimensional reference
Cross-recessed countersunk head tapping screws
| dThread size | PPitch · mm | aMaxa · Thread Runout (max) (mm) | dkTheoreticalMaxdk · Theoretical Head Diameter (max) (mm) | dkHead diameter · mm | dkMindk · Head Diameter (min) (mm) | kHead height · mm | rMaxr · Radius (max) (mm) | driveNoRecess Number | driveRefHm · Type H Recess Width (ref.) (mm) | driveDepthMaxHt · Type H Penetration (max) (mm) | driveDepthMinHt · Type H Penetration (min) (mm) | driveRefZm/A · Type Z / Socket Width (ref.) (mm) | driveDepthMaxZt · Type Z Penetration (max) (mm) | driveDepthMinZt · Type Z Penetration (min) (mm) | pointCy · Point Length — C (ref.) (mm) | pointFy · Point Length — F (ref.) (mm) | pointRy · Point Length — R (ref.) (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ST2.2 | 0.8 | 1.6 | 4.4 | 3.8 | 3.5 | 1.1 | 0.8 | 0 | 1.9 | 1.2 | 0.9 | 2 | 1.2 | 0.95 | 2 | 1.6 | — |
| ST2.9 | 1.1 | 2.2 | 6.3 | 5.5 | 5.2 | 1.7 | 1.2 | 1 | 3.2 | 2.1 | 1.7 | 3 | 2.01 | 1.76 | 2.6 | 2.1 | — |
| ST3.5 | 1.3 | 2.6 | 8.2 | 7.3 | 6.9 | 2.35 | 1.4 | 2 | 4.4 | 2.4 | 1.9 | 4.1 | 2.2 | 1.75 | 3.2 | 2.5 | 2.7 |
| ST4.2 | 1.4 | 2.8 | 9.4 | 8.4 | 8 | 2.6 | 1.6 | 2 | 4.6 | 2.6 | 2.1 | 4.4 | 2.51 | 2.06 | 3.7 | 2.8 | 3.2 |
| ST4.8 | 1.6 | 3.2 | 10.4 | 9.3 | 8.9 | 2.8 | 2 | 2 | 5.2 | 3.2 | 2.7 | 4.9 | 3.05 | 2.6 | 4.3 | 3.2 | 3.6 |
| ST5.5 | 1.8 | 3.6 | 11.5 | 10.3 | 9.9 | 3 | 2.2 | 3 | 6.6 | 3.3 | 2.8 | 6.3 | 3.18 | 2.73 | 5 | 3.6 | 4.3 |
| ST6.3 | 1.8 | 3.6 | 12.6 | 11.3 | 10.9 | 3.15 | 2.4 | 3 | 6.8 | 3.5 | 3 | 6.6 | 3.45 | 3 | 6 | 3.6 | 5 |
| ST8 | 2.1 | 4.2 | 17.3 | 15.8 | 15.4 | 4.65 | 3.2 | 4 | 8.9 | 4.6 | 4 | 8.8 | 4.6 | 4.15 | 7.5 | 4.2 | 6.3 |
| ST9.5 | 2.1 | 4.2 | 20 | 18.3 | 17.8 | 5.25 | 4 | 4 | 10 | 5.7 | 5.1 | 9.8 | 5.64 | 5.19 | 8 | 4.2 | — |
dST2.9
P · mm1.1
aMax2.2
dkTheoreticalMax6.3
More dimensions
dk · mm5.5
dkMin5.2
k · mm1.7
rMax1.2
driveNo1
driveRefH3.2
driveDepthMaxH2.1
driveDepthMinH1.7
driveRefZ3
driveDepthMaxZ2.01
driveDepthMinZ1.76
pointC2.6
pointF2.1
pointR—
dST3.5
P · mm1.3
aMax2.6
dkTheoreticalMax8.2
More dimensions
dk · mm7.3
dkMin6.9
k · mm2.35
rMax1.4
driveNo2
driveRefH4.4
driveDepthMaxH2.4
driveDepthMinH1.9
driveRefZ4.1
driveDepthMaxZ2.2
driveDepthMinZ1.75
pointC3.2
pointF2.5
pointR2.7
dST4.2
P · mm1.4
aMax2.8
dkTheoreticalMax9.4
More dimensions
dk · mm8.4
dkMin8
k · mm2.6
rMax1.6
driveNo2
driveRefH4.6
driveDepthMaxH2.6
driveDepthMinH2.1
driveRefZ4.4
driveDepthMaxZ2.51
driveDepthMinZ2.06
pointC3.7
pointF2.8
pointR3.2
dST4.8
P · mm1.6
aMax3.2
dkTheoreticalMax10.4
More dimensions
dk · mm9.3
dkMin8.9
k · mm2.8
rMax2
driveNo2
driveRefH5.2
driveDepthMaxH3.2
driveDepthMinH2.7
driveRefZ4.9
driveDepthMaxZ3.05
driveDepthMinZ2.6
pointC4.3
pointF3.2
pointR3.6
dST5.5
P · mm1.8
aMax3.6
dkTheoreticalMax11.5
More dimensions
dk · mm10.3
dkMin9.9
k · mm3
rMax2.2
driveNo3
driveRefH6.6
driveDepthMaxH3.3
driveDepthMinH2.8
driveRefZ6.3
driveDepthMaxZ3.18
driveDepthMinZ2.73
pointC5
pointF3.6
pointR4.3
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