No.of Latch Lug jaw
No.of Hinge Pin Hole
Size Range(mm(in))
Rated Torque
(kN.m)
in
mm
1#
Ⅰ
31/2~6
88.9~152
90
Ⅱ
53/4~7
146~178
Ⅲ
65/8~81/4
168~210
2#
8~95/8
203~244
105/8~111/4
270~286
3#
113/4~123/4
298~324
55
133/8~143/8
340~365
4#
16~17
406~432