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Unit:mm

Cross Recessed Round Head Tapping Screws with Lock Washers External Teeth Assembly

SJ 2839 - 1987

Display drawing:

原电子工业部SJ 2839 - 1987 SJ2839 2839SJ Cross Recessed Round Head Tapping Screws with Lock Washers External Teeth Assembly
Screw Thread
d
ST3 ST4.0 ST5
P Pitch
dk max
min
k max
min
a max
y Ref.
Socket No.
M max
Insert Depth / max
Insert Depth / min
d1 max
min
dc max
min
s
H ≈2s
Number of Teeth
1.06 1.41 1.59
6.4 8.5 10.6
5.9 8 10
2.6 2.85 3.55
2.3 2.55 3.25
1.06 1.41 1.59
2.6 3.7 4.3
2 2 2
3.7 4 4.8
1.63 1.93 2.73
1.06 1.35 2.14
5.3 6.8 8.3
5 6.44 7.94
7.5 9.5 11.5
7.14 9.14 11.14
0.5 0.5 0.6
1 1 1.2
8 8 8
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