Lit. No. B64093, Rev. 09
10
April 15, 2011
TORQUE SPECIFICATIONS
TORQUE CHART
CAUTION
Read instructions before assembling.
Fasteners should be
fi
nger tight until
instructed to tighten according to the torque
chart. Use standard methods and practices
when attaching snowplow including proper
personal protective safety equipment.
Grade Identi
fi
cation for J429–Grade 5 Bolt
Grade Identi
fi
cation for J429–Grade 8 Bolt
SAE J429 Grade 5 Torque Values
SAE J429 Grade 8 Torque Values
Nominal
Thread Size
Clamp Loads
(lb)
Tightening Torque
Nominal
Thread Size
Clamp Loads
(lb)
Tightening Torque
"Lubricated"
"Dry"
"Lubricated"
"Dry"
1/4-20
2,000
6 ft-lb
8 ft-lb
1/4-20
2,850
9 ft-lb
12 ft-lb
5/16-18
3,350
13 ft-lb
18 ft-lb
5/16-18
4,700
18 ft-lb
25 ft-lb
3/8-16
4,950
23 ft-lb
31 ft-lb
3/8-16
6,950
32 ft-lb
44 ft-lb
7/16-14
6,800
37 ft-lb
50 ft-lb
7/16-14
9,600
53 ft-lb
70 ft-lb
1/2-13
9,050
57 ft-lb
75 ft-lb
1/2-13
12,800
80 ft-lb
107 ft-lb
9/16-12
11,600
82 ft-lb
109 ft-lb
9/16-12
16,400
115 ft-lb
154 ft-lb
5/8-11
14,500
113 ft-lb
151 ft-lb
5/8-11
20,300
159 ft-lb
211 ft-lb
3/4-10
21,300
200 ft-lb
266 ft-lb
3/4-10
30,100
282 ft-lb
376 ft-lb
7/8-9
29,435
321 ft-lb
430 ft-lb
7/8-9
41,550
454 ft-lb
606 ft-lb
1-8
38,600
482 ft-lb
640 ft-lb
1-8
54,540
680 ft-lb
900 ft-lb
8.8
Grade Identi
fi
cation for Metric–Grade 8.8 Bolt
10.9
Grade Identi
fi
cation for Metric–Grade 10.9 Bolt
Metric Class 8.8 Torque Values
Metric Class 10.9 Torque Values
Diameter
(mm)
Clamp Loads
(lb)
Tightening Torque
Diameter
(mm)
Clamp Loads
(lb)
Tightening Torque
"Lubricated"
"Dry"
"Lubricated"
"Dry"
5
1,389
3 ft-lb
5 ft-lb
5
1,987
5 ft-lb
7 ft-lb
6
1,965
6 ft-lb
8 ft-lb
6
2,812
8 ft-lb
11 ft-lb
7
2,826
10 ft-lb
13 ft-lb
7
4,044
14 ft-lb
19 ft-lb
8
3,579
14 ft-lb
19 ft-lb
8
5,121
20 ft-lb
27 ft-lb
10
5,672
28 ft-lb
37 ft-lb
10
8,116
40 ft-lb
53 ft-lb
12
8,243
49 ft-lb
65 ft-lb
12
11,796
70 ft-lb
92 ft-lb
14
11,246
77 ft-lb
103 ft-lb
14
16,092
111 ft-lb
148 ft-lb
16
15,882
125 ft-lb
167 ft-lb
16
21,970
173 ft-lb
231 ft-lb
18
19,423
172 ft-lb
229 ft-lb
18
26,868
238 ft-lb
317 ft-lb
20
24,784
244 ft-lb
325 ft-lb
20
34,284
338 ft-lb
450 ft-lb
