2. Maintenance
2-2
2.2
Tightening Torque
2.2.1
General bolts and nuts tightening torque
Fasten all the bolts and nuts with the specified tightening torque when assembling.
Low or Middle carbon steel bolt
(SS400B etc…)
High tensile strength bolt
(SCM435 etc…)
4.6
－
6.8
（
4T
－
6T
）
Hexagon bolts
8.8
－
12.9
（
7T
－
12T
）
Socket bolts
Hexagon bolts
Hexagon bolts
Width of across
flat in. (mm)
Tightening
torque
lbf
･
in.(N
･
m)
[kgf
･
cm]
Socket bolts
Width of across
flat in.(mm)
Hexagon bolts
Width of across
flat in.(mm)
Tightening
torque
lbf
･
in.(N
･
m)
[kgf
･
cm]
0.24 (6)
0.39(10)
44.2( 5)[ 51]
0.20 (5)
0.39(10)
88.5( 10)[ 100]
0.31 (8)
0.51(13)
106.2( 12)[ 124]
0.24 (6)
0.51(13)
221.2( 25)[ 245]
0.39(10)
0.67(17)
221.2( 25)[ 245]
0.31 (8)
0.67(17)
433.6( 49)[ 485]
0.47(12)
0.75(19)
380.5( 43)[ 425]
0.39(10)
0.75(19)
752.2( 85)[ 845]
0.55(14)
0.87(22)
601.8( 68)[ 675]
0.47(12)
0.87(22)
1,194.7(135)[1,350]
0.63(16)
0.94(24)
938.1(106)[1,055]
0.55(14)
0.94(24)
1,858.4(210)[2,100]
0.71(18) 1.06(27)
1,283.2(145)[1,450]
0.55(14)
1.06(27)
2,566.4(290)[2,900]
0.79(20) 1.18(30)
1,814.2(205)[2,050]
0.67(17)
1.18(30)
3,628.3(410)[4,100]
0.87(22) 1.26(32)
2,477.9(280)[2,800]
0.67(17)
1.26(32)
4,955.8(560)[5,600]
0.94(24) 1.42(36)
3,053.1(345)[3,450]
0.75(19)
1.42(36)
6,283.2(710)[7,100]
Applied sections For general sections such as bonnet
and frame.
Receiver tank and other designation part.
The above torque values in the table shall be applicable for the bolts and nuts used
for machine.
Generally, the abovementioned tightening torques should be followed, but in some
points different torque is specified. So use the tightening torque without fail. (See
following pages.)
Make sure to remove rust and dust before tightening.
Bolt diameter
in. (mm)
Kind
Strength and
sorting
Width of
across flat
･
Tightening
torque
Discount-Equipment.com
Summary of Contents for PDS185S-6E1
Page 1: ...www discount equipment com D i s c o u n t E q u i p m e n t c o m...
Page 10: ...1 Specification 1 4 Unit mm A131025 D i s c o u n t E q u i p m e n t c o m...
Page 18: ...1 Specification 1 12 1 7 Piping Diagram PC14063E D i s c o u n t E q u i p m e n t c o m...
Page 19: ...1 Specification 1 13 1 8 Fuel Piping PC14001 D i s c o u n t E q u i p m e n t c o m...
