unit:mm
No.
d
D
T
Assemblage hole size
d1
Flat head
P.C.D
10
10.2
30
3
3.5
M3
20
12
12.2
40
28
13
13.2
15
15.2
50
35
16
16.2
18
18.2
20.2
5
5.0
M5
25
25.2
55
30.2
60
45
※Suggest using g6 tolerance guides.