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Click Specification

Unit:mm

Hexalobular Socket Raised Countersunk Head Screws

QC /T 866 - 2011

Display drawing:

汽标QC /T866 - 2011 QC866 866QC Hexalobular Socket Raised Countersunk Head Screws
Download CAD Model
Thread Size
d
M4 M5 M6 M8 M10
P Pitch
a max
b min
dk Theory
Actual value max=nominal size
min
f ≈
k max=nominal size
r max
R ≈
x max
Socket No.
A Ref.
t max
min
0.7 0.8 1 1.25 1.5
1.4 1.6 2 2.5 3
38 38 38 38 38
9.4 10.4 12.6 17.3 20
8.4 9.3 11.3 15.8 18.3
8. 04 8.94 10.87 15.37 17.78
1 1.2 1.4 2 2.3
2.7 2.7 3.3 4.65 5
1 1.3 1.5 2 2.5
4 5 6 8.5 9.5
1.75 2 2.5 3.2 3.8
20 25 30 45 50
3.95 4.5 5.6 7.93 8.95
1.8 2.03 2.42 3.31 3.81
1.42 1.65 2.02 2.92 3.42

Alternative history

GB /T 866 - 1986 QC /T 866 - 2011
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