Troubleshooting o, 39 bolt torque specifications – Allmand Brothers Allmand 8.5 10 FT BACKHOE User Manual
Page 39
39
BOLT TORQUE SPECIFICATIONS
GENERAL TORQUE SPECIFICATION TABLE
Use the following torques when special torques are not given. These values apply to fasteners as received
from suppliers, dry, or when lubricated with normal engine oil. They do not apply if special graphited or moly
disulphide greases or other extreme pressure lubricants are used. This applies to both UNF and UNC threads.
Remember to always use grade five or better when replacing bolts.
METRIC BOLT TORQUE SPECIFICATIONS
Coarse Thread
Fine Thread
Size of Screw
Grade No.
Ptich (mm)
Pounds Feet
Newton-Meters
Pitch (mm)
Pounds Feet
Newton-Meters
5.6
3.6-5.8
4.9-7.9
-
-
M6
8.8
1.0
5.8-9.4
7.9-12.7
-
-
-
10.9
7.2-10
9.8-13.6
-
-
5.6
7.2-14
9.8-19
12-17
16.3-23
M8
8.8
1.25
17-22
23-29.8
1.0
19-27
25.7-36.6
10.9
20-26
27.1-35.2
22-31
29.8-42
5.6
20-25
27.1-33.9
20-29
27.1-39.3
M10
8.8
1.5
34-40
46.1-54.2
1.25
35-47
47.4-63.7
10.9
38-46
51.5-62.3
40-52
54.2-70.5
5.6
28-34
37.9-46.1
31-41
42-55.6
M12
8.8
1.75
51-59
69.1-79.9
1.25
56-68
75.9-92.1
10.9
57-66
77.2-89.4
62-75
84-101.6
5.6
49-56
66.4-75.9
52-64
70.5-86.7
M14
8.8
2.0
81-93
109.8-126
1.5
90-106
122-143.6
10.9
96-109
130.1-147.7
107-124
145-168
5.6
67-77
90.8-104.3
69-83
93.5-112.5
M16
8.8
2.0
116-130
157.2-176.2
1.5
120-138
162.6-187
10.9
129-145
174.8-196.5
140-158
189.7-214.1
5.6
88-100
119.2-136
100-117
136-158.5
M18
8.8
2.0
150-168
203.3-227.6
1.5
177-199
239.8-269.6
10.9
175-194
237.1-262.9
202-231
273.7-313
5.6
108-130
146.3-176.2
132-150
178.9-203.3
M20
8.8
2.5
186-205
252-277.8
1.5
206-242
279.1-327.9
10.9
213-249
288.6-337.4
246-289
333.3-391.6
SAE Grade No.
2
5
8*
Bolt head identification
marks as per grade.
NOTE: Manufacturing
Marks Will Vary
TORQUE
TORQUE
TORQUE
Bolt Size
Pounds Feet
Newton-Meters
Pounds Feet
Newton-Meters
Pounds Feet
Newton-Meters
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
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
47.5
57.0
45
54
61.0
73.2
7/16
11.11
30
25
40.7
47.4
54
64
73.2
86.8
70
84
94.9
113.9
1/2
12.70
45
52
61.0
70.5
80
96
108.5
130.2
110
132
149.2
179.0
9/16
14.29
65
75
88.1
101.6
110
132
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
* Thick Nuts must be used with Grade 8 bolts
TROUBLESHOOTING
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