Doosan DISD SD 310 - Page 79

The following General Torque Values must be used in all cases where SPECIAL TORQUE VALUES are not
given
NOTE: TORQUE VALUES LISTED THROUGHOUT THIS MANUAL ARE LUBRICATED (WET)
THREADS; VALUES SHOULD BE INCREASED 1/3 FOR NONLUBRICATED (DRY)
THREADS.
THREAD SIZE
HEAT TREATED MATERIAL GRADE 5 AND GRADE 8
GRADE 5
(3 RADIAL DASHES ON HEAD)
GRADE 8
(6 RADIAL DASHES ON HEAD)
FOOT POUNDS
(ft lb)
NEWTON
METER (N•m)
FOOT POUNDS
(ft lb)
NEWTON
METER (N•m)
1/4" - 20
1/4" - 28
5/16" - 18
5/16" - 24
3/8" - 16
3/8" - 24
7/16" - 14
7/16" - 20
1/2" - 13
1/2" - 20
9/16" - 12
9/16" - 18
5/8" - 11
5/8" - 18
3/4" - 10
3/4" - 16
7/8" - 9
7/8" - 14
1" - 8
1" - 14
1 1/8" - 7
1 1/8" - 12
1 1/4" - 7
1 1/4" - 12
1 3/8" - 6
1 3/8" - 12
1 1/2" - 6
1 1/2" - 12
1 3/4" - 5
2" - 4 1/2
6
7
13
15
24
27
38
42
58
65
84
93
115
130
205
240
305
334
455
510
610
685
860
955
1130
1290
1400
1690
2370
3550
8
9
18
20
33
37
52
57
79
88
114
126
156
176
278
312
414
454
617
691
827
929
1166
1295
1532
1749
2034
2291
3213
4813
9
11
18
21
34
38
54
60
82
90
120
132
165
185
290
320
455
515
695
785
990
1110
1400
1550
1830
2085
2430
2730
3810
5760
12
15
24
28
46
52
73
81
111
122
163
179
224
251
393
434
617
698
942
1064
1342
1505
1898
2102
2481
2827
3295
3701
5166
7810
NOTE: If any bolts and nuts are found loose or at values less than what the chart states, it is
recommended that the loose bolt and/or nut be replaced with a new one.
Standard Torque S0309000
Page 5