38
Section 9: Torque Values Chart
SB1051, SB1064, SB1574, & SB2584 with S/N 881640- Snow Blowers 370-027M
2/11/21
Section 9: Torque Values Chart
Torque Values Chart for Common Bolt Sizes
Bolt Head Identification
Bolt Head Identification
Bolt Size
(inches)
Grade 2
Grade 5
Grade 8
Bolt Size
(Metric)
Class 5.8
Class 8.8
Class 10.9
in-tpi
1
N · m
2
ft-lb
3
N · m ft-lb N · m ft-lb
mm x pitch
4
N · m ft-lb N · m ft-lb N · m ft-lb
1/4" - 20
7.4
5.6
11
8
16
12
M 5 X 0.8
4
3
6
5
9
7
1/4" - 28
8.5
6
13
10
18
14
M 6 X 1
7
5
11
8
15
11
5/16" - 18
15
11
24
17
33
25
M 8 X 1.25
17
12
26
19
36
27
5/16" - 24
17
13
26
19
37
27
M 8 X 1
18
13
28
21
39
29
3/8" - 16
27
20
42
31
59
44
M10 X 1.5
33
24
52
39
72
53
3/8" - 24
31
22
47
35
67
49
M10 X 0.75
39
29
61
45
85
62
7/16" - 14
43
32
67
49
95
70
M12 X 1.75
58
42
91
67
125
93
7/16" - 20
49
36
75
55
105
78
M12 X 1.5
60
44
95
70
130
97
1/2" - 13
66
49
105
76
145
105
M12 X 1
90
66
105
77
145
105
1/2" - 20
75
55
115
85
165
120
M14 X 2
92
68
145
105
200
150
9/16" - 12
95
70
150
110
210
155
M14 X 1.5
99
73
155
115
l215
160
9/16" - 18
105
79
165
120
235
170
M16 X 2
145
105
225
165
315
230
5/8" - 11
130
97
205
150
285
210
M16 X 1.5
155
115
240
180
335
245
5/8" - 18
150
110
230
170
325
240
M18 X 2.5
195
145
310
230
405
300
3/4" - 10
235
170
360
265
510
375
M18 X 1.5
220
165
350
260
485
355
3/4" - 16
260
190
405
295
570
420
M20 X 2.5
280
205
440
325
610
450
7/8" - 9
225
165
585
430
820
605
M20 X 1.5
310
230
650
480
900
665
7/8" - 14
250
185
640
475
905
670
M24 X 3
480
355
760
560 1050
780
1" - 8
340
250
875
645 1230
910
M24 X 2
525
390
830
610
1150
845
1" - 12
370
275
955
705 1350
995
M30 X 3.5
960
705 1510
1120 2100 1550
1-1/8" - 7
480
355 1080
795 1750 1290
M30 X 2
1060
785 1680 1240 2320 1710
1-1/8" - 12
540
395 1210
890 1960 1440
M36 X 3.5
1730 1270 2650 1950 3660 2700
1-1/4" - 7
680
500 1520
1120 2460 1820
M36 X 2
1880 1380 2960 2190 4100 3220
1-1/4" - 12
750
555 1680 1240 2730 2010
1
in-tpi = nominal thread diameter in inches-threads per inch
1-3/8" - 6
890
655 1990 1470 3230 2380
2
N· m = newton-meters
1-3/8" - 12
1010
745 2270 1670 3680 2710
3
ft-lb= foot pounds
1-1/2" - 6
1180
870 2640 1950 4290 3160
4
mm x pitch = nominal thread diameter in millimeters x thread
pitch
1-1/2" - 12
1330
980 2970 2190 4820 3560
Torque tol 0%, -15% of torquing values. Unless otherwise specified use torque values listed above.
Additional Torque Values
Drive Shaft Shear Bolt
8 ft-lbs (See page 29)
SB10 & SB15 Driveline Shear Bolt
19 ft-lbs (See page 29)
SB25 Driveline Shear Bolt
52 ft-lbs (See page 29)
5.8
8.8
10.9
