:.
1-8 GENERAL INFORMATION
TIGHTENING TORQUE SPECIFICATIONS
The tightening torque values given in the table below are applicable to the bolts unless otherwise
specified.
STANDARD BOLT
kg.m
(I b.ft/N.m)
4.8 (4T)
(7-n
88
0
9.8 (9T)
Refined
Non-Refined
@I @@@I @
0 77
No mark
-@@$I @
.
M6 x1.0
0.4-0.8
0.5-1.0
(2.9-5.813.9-7.8) (3.6-7.2/4.9-9.8)
M8 xl.25
0.8-1.8
1.2-2.3
x7-3.1
(5.8~~13.OjT.8-17.7)
(8.7~16.6/11.8-22.6)
(12.3-22.4/16.7-30.4)
Ml0 x 1.25
2.1-3.5
2.8-4.7
3.8-6.4
(15.2-25.3/20.6-34.3)
(20.3434.0/27.5-46.1)
(27.5~46.3/37.3-62.8)
M72 x 1.25
5.0-7.5
6.2-9.3
7.7-11.6
(36.2-54.2/49.0-73.6) (44.8~67.3/60.8-91.2)
(55.7~83.9/75.5-113.8)
M34 x 1.5
7.8-11.7
9.5-14.2
11.6-17.4
(56.4-84.6178.5-114.7)
(68.7-102.7/93.2-139.3) .
(83.9~125.6/113.8-170.6)
Ml6 x 1.5
10.6-16.0 . 13.8-20.8
16.3-24.5
(76.7~115.7/103.0--156.9)
(99.8-150.4/135.3-204.0)
(118.9-177.2/159.9-240.3)
Nil8 x 1.5
15.4-23.0 19.9-29.9
23.4-35.2
.
(lll.l-166.4/151.0-225.6)
(143.9-216.3/195.2-391.3)
(169.34254.6/229.5-345.2)
nmxl.5
21.0-31.6
27.5-41.3
32.3-48.5
,
(151.9-228.6/205.9-307.9) (198.9-298.7/269.7-405.0)
(233.6~350.8/316.8-475.6)
M22xl.5
25.6-42.2 37.0-55.5
43.3-64.9
(185.2-305.2/251.1-413.8) (267.6-401.4/362.9-544.3)
(313.2-469.4/424.6-636.5)
M24 x 2.0
36.6-55.0
43.9-72.5
56.5-84.7
(264.7-397.8/358.9-539.4) (317.5~523.9/430.5-711.0)
(408.7-612.6/554.1-830.6)
*Ml0 x 1.5
2.0-3.4
2.8-4.6
3.7-6.1
(14.5-24.6/19.6-32.4) (20.3-33.3127.5-45.1)
(26.8-44.1/36.3-59.8)
I
*Ml2 x 1.5
4.6-7.0
5.8-8.6
7.3-10.9
(33.3-50.6/45.1-68.7)
(42.0~62.2/56.9-84.3)
(52.8-78.8/7X6-106.9)
*Ml4 x 2.0
7.3-10.9
9.0-13.4 10.9-16.3
(52.8-78.8/77.6-106.9)
(65.1~96.9/88.3-131.4)
(78.8~118.9/106.9-159.9)
10.2-15.2
*Ml6 x 2.0
173.8~110.0/100.0-149.1;
13.2-19.8
15.6-23.4
I
(95.5~143.2/129.5-194.2)
(112.8-169.3/162.8-229.5)
r
J
,I
‘\
i -
&~
,a-
,<.
‘C
A
_--
r,.-
‘3
,Tc-\
: 3
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An asterisk (*) indicates that *he bolts are used for female threaded parts that are made of soft materials
such as casting. Those shown in parentheses in the strength class indicate the classification by the old
standard.
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