
Pellerin Milnor Corporation
Torque Requirements for Fasteners
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The document about the assembly gives the torque requirements for other fasteners.
If fastener
torque specifications or threadlocker requirements in an assembly document are different
from this document, use the assembly document.
Figure 1. The Bolts in Milnor
®
Equipment
The Marks on Bolt Heads
Legend
A...
SAE Grades 1 and 2, ASTM A307, and stainless
steel
B...
Grade BC, ASTM A354
C...
SAE Grade 5, ASTM A449
D...
SAE Grade 8 and ASTM A354 BD
1.
Torque Values
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These tables give the standard dimension, grade, threadlocker, and torque requirements for fasten-
ers frequently used on Milnor
®
equipment.
NOTE:
Data from the Pellerin Milnor
®
Corporation “Bolt Torque Specification” (bolt_
torque_milnor.xls/2002096).
1.1.
Fasteners Made of Carbon Steel
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1.1.1.
Without a Threadlocker
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Table 1. Torque Values for Standard Fasteners with Maximum 5/16-inch Diameters and No Lubricant
Dimension
The Grade of the Bolt
Grade 2
Grade 5
Grade 8
Grade BC
Pound-Inches
N-m
Pound-Inches
N-m
Pound-Inches
N-m
Pound-Inches
N-m
1/4 x 20
66
7
101
11
143
16
126
14
1/4 x 28
76
9
116
13
163
18
–
–
5/16 x 18
136
15
209
24
295
33
258
29
5/16 x 24
150
17
232
26
325
37
–
–
Table 2. Torque Values for Standard Fasteners Larger Than 5/16-inch Diameters and No Lubricant
Dimension
The Grade of the Bolt
Grade 2
Grade 5
Grade 8
Grade BC
Pound-Feet
N-m
Pound-Feet
N-m
Pound-Feet
N-m
Pound-Feet
N-m
3/8 x 16
20
27
31
42
44
59
38
52
3/8 x 24
23
31
35
47
50
68
–
–
7/16 x 14
32
43
49
66
70
95
61
83
7/16 x 20
36
49
55
75
78
105
–
–
1/2 x 13
49
66
75
102
107
145
93
126
1/2 x 20
55
75
85
115
120
163
–
–
I
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Содержание MWF125J7
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