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TORQUE SPECIFICATION TABLE
DR
®
SNOW THROWER Safety, Operation & Maintenance Instructions 27
GENERAL SPECIFICATION TABLE
Use the following torques when special torques are not given
NOTE: These values apply to fasteners as received from supplier, dry, or when lubricated with normal engine oil. They do not apply if special
graphited or moly sidulphide greases or other extreme pressure lubricants are used. This applies to both UNF and UNC threads.
SEE Grade No. 2 5 8
BOLT HEAD
IDENTIFICATION MARKS
AS PER GRADE
NOTE: MANUFACTURING
MARKS WILL VARY.
Torque Torque Torque
BOLT SIZES Pounds-Foot Newtons-Meter Pounds-Foot Newtons-Meter Pounds-Foot Newtons-Meter
Inches Millimeters MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX.
1/4 6.35 5 6 6.8 8.13 9 11.0 12.2 14.9 12 15 16.3 30.3
5/16 7.94 10 12 13.6 16.3 17 20.5 23.1 27.8 24 29 32.5 39.3
3/8 9.53 20 23 27.1 31.2 35 42.0 47.5 57.0 45 54 61.0 73.2
7/16 11.11 25 30 40.7 47.4 54 64.0 73.2 86.8 70 84 94.9 113.9
1/2 12.70 45 52 61.0 70.5 80 96.0 108.5 130.2 110 132 149.2 179.0
9/16 14.29 65 75 88.1 101.6 110 132.0 149.2 179.0 160 192 217.0 260.4
5/8 15.88 95 105 128.7 142.3 150 180 203.4 244.1 220 264 298.3 358.0
3/4 19.05 150 185 203.3 250.7 270 324 366.1 439.3 380 456 515.3 618.3
7/8 22.23 160 200 216.8 271.0 400 480 542.4 650.9 600 720 813.6 976.3
1 25.40 250 300 338.8 406.5 580 696 786.5 943.8 900 1080 1220.4 1464.5
1 1/8 25.58 - - - - 800 880 1084.8 1193.3 1280 1440 1735.7 1952.6
1 1/4 31.75 - - - - 1120 1240 1518.7 1681.4 1820 2000 2467.9 2712.0
1 3/8 34.93 - - - - 1460 1680 1979.8 2278.1 2380 2720 3227.3 3688.3
1 1/2 38.10 - - - - 1940 2200 2630.6 2983.2 3160 3560 4285.0 4827.4
METRIC BOLT TORQUE SPECIFICATIONS
Coarse thread Fine Thread
Pounds-Foot Newtons-Meter Pounds-Foot Newtons-Meter
Size of
screw
Grade No.
Pitch
(mm)
MIN. MAX. MIN. MAX.
Pitch
(mm)
MIN. MAX. MIN. MAX.
M6
4T
7T
8T
1.0
3.6
5.8
7.2
5.8
9.4
10
4.9
7.9
9.8
7.9
12.7
13.6
-
-
-
-
-
-
-
-
-
-
-
-
-
M8
4T
7T
8T
1.25
7.2
17
20
14
22
26
9.8
23
27.1
19.0
29.8
35.2
1.0
12
19
22
17
27
31
16.3
25.7
29.8
23.0
36.6
42
M10
4T
7T
8T
1.5
20
34
38
25
40
46
27.1
46.1
51.5
33.9
54.2
62.3
1.25
20
35
40
29
47
52
27.1
47.4
54.2
39.3
63.7
70.5
M12
4T
7T
8T
1.75
28
51
57
34
59
66
37.9
69.1
77.2
46.1
79.9
89.4
1.25
31
56
62
41
68
75
42
75.9
84
55.6
92.1
101.6
M14
4T
7T
8T
2.0
49
81
96
56
93
109
66.4
109.8
130.1
75.9
126
147.7
1.5
52
90
107
64
106
124
70.5
122
145
86.7
143.6
168
M16
4T
7T
8T
2.0
67
116
129
77
130
145
90.8
157.2
174.8
104.3
176.2
196.5
1.5
69
120
140
83
138
158
93.5
162.6
189.7
112.5
187
214.1
M18
4T
7T
8T
2.0
88
150
175
100
168
194
119.2
203.3
237.1
136
227.6
262.9
1.5
100
177
202
117
199
231
136
239.8
273.7
158.5
269.6
313
M20
4T
7T
8T
2.5
108
186
213
130
205
249
146.3
252
288.6
176.2
277.8
337.4
1.5
132
206
246
150
242
289
178.9
279.1
333.3
203.3
327.9
391.6