unit:mm
B
M
Pitch
L
S
T
5mm designation
Specified length
(T≦L+2)
3
M2
0.4
5 ~ 25
3~8,11,12,16,18
4.7
M2.5
0.45
5 ~ 30
6,7,8,11,12,13,18
6
M3
0.5
5 ~ 60
4~16,18,22
M4
0.7
6~19,22,27
7
M5
0.8
10 ~ 50
8 , 12
8
M6
1
12