11. TOOLS
11-3
11.1
TIGHTENING TORQUES FOR CAPSCREWS AND NUTS
Table11-1 Tightening torque for metric coarse threads (not plated)
Unit : N•m (lbf•ft)
Classification
4.8T
7T
10.9T
Nominal size
No lubrication Oil lubrication No lubrication Oil lubrication No lubrication Oil lubrication
M6
P=1
4.4±0.5
(3.2±0.4)
3.7±0.4
(2.7±0.3)
9.6±1.0
(7.1±0.7)
8.1±0.8
(6.0±0.6)
17.4±1.8
(12.8±1.3)
14.7±1.5
(10.8±1.1)
M8
P=1.25
10.7±1.1
(7.9±0.8)
9.0±0.9
(6.6±0.7)
23.5±2.0
(17.3±1.5)
19.6±2.0
(14.5±1.5)
42.2±3.9
(31.1±2.9)
35.3±3.9
(26.0±2.9)
M10
P=1.5
21.6±2.0
(15.9±1.4)
17.9±1.8
(13.2±1.3)
46.1±4.9
(34.0±3.6)
39.2±3.9
(28.9±2.9)
83.4±8.8
(61.5±6.5)
70.6±6.9
(52.1±5.1)
M12
P=1.75
36.3±3.9
(26.8±2.9)
31.4±2.9
(23.2±2.1)
79.4±7.8
(58.6±5.8)
66.7±6.9
(49.2±5.1)
143±15
(105±11)
121±12
(89.2±8.9)
M14
P=2
57.9±5.9
(42.7±4.4)
49.0±4.9
(36.1±3.6)
126±13
(92.9±9.6)
106±10
(78.2±7.4)
226±20
(167±15)
191±19
(141±14)
M16
P=2
88.3±8.8
(65.1±6.5)
74.5±6.9
(55.0±5.1)
191±20
(141±15)
161±16
(119±12)
343±39
(253±29)
284±29
(209±21)
M18
P=2.5
122±12
(90.0±8.9)
103±10
(75.8±7.2)
265±29
(195±21)
226±20
(167±15)
481±49
(355±36)
402±39
(297±29)
M20
P=2.5
172±17
(127±13)
144±14
(106±10)
373±39
(275±29)
314±29
(232±21)
667±69
(492±51)
559±59
(412±44)
M22
P=2.5
226±20
(167±15)
192±20
(142±15)
500±49
(369±36)
422±39
(311±29)
902±88
(665±65)
755±78
(557±58)
M24
P=3
294±29
(217±21)
235±29
(173±21)
637±69
(470±51)
520±49
(383±36)
1160±118
(856±87)
941±98
(694±72)
M27
P=3
431±39
(318±29)
353±39
(260±29)
941±98
(694±72)
765±78
(564±58)
1700±167
(1250±123)
1370±137
(1010±101)
M30
P=3.5
588±59
(434±44)
490±49
(361±36)
1285±127
(948±94)
1079±108
(796±80)
2300±235
(1700±173)
1940±196
(1430±145)
M33
P=3.5
794±78
(586±58)
667±69
(492±51)
1726±177
(1270±131)
1451±147
(1070±108)
3110±314
(2290±232)
2610±265
(1930±195)
M36
P=4
1030±98
(760±72)
863±88
(637±65)
2226±226
(1640±167)
1863±186
(1370±137)
4010±402
(2960±297)
3360±333
(2480±246)
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