Operation

The proper tightening torque may differ depending upon the kind or size of the screw,

the material of the workpiece to be tightened, etc. The relation between tightening

torque and tightening time

is

shown in the figures below.

+
(4)
0

Machine screw

for M6 (1/4")
Proper tightening torque
for M5 (3/16")
1
I
05
1
seconds
Kg
.
cm
Ift
.
lbsl

Standard bolt

Kg
.
cm
(ft
.
Ibs) 500 -
(36) M10
(3/8")
M8
(5/16"1 Proper tightenlng torque
for M10 (3/8")
Proper tightening torque
for M8 (5116")
Proper tightening torque
for
M6
(1/4")
1
0
1
2
seconds
Tightening time

8