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Hardwareidentification 8=Torque Specifications
Common Hardware Types
Hex Head Capscrew
C
_ll(/(_li((,_(tl((l(
) _
Carriage Belt
Washer
Lockwasher
O
Hex Nut
Standard
Hardware
Sizing
When
a washer
or nut is identified
as
1/2",
this
is the
Nominal
size, meaning
the inside
diameteris
1/2 inch; if a
second
number
is present
it represent
the threads
per inch
When
bolt or capscrew
is identified
as 1/2 - 16 x 2", this
means
the Nominal
size, or body
diameter
is 1/2 inch; the
second
number
represents
the threads
perinch
(16 in this
example,
and the final number
is the body length of the
bolt or screw
(in this example
2 inches
long).
The guides
and ruler
furnished
below
are designed
to
help
you
select
the appropriate
hardware
and tools.
m_
--4
m4_
Screw_
Body
Diameter
Nut, 1/2"
Inside
Diameter
1/2×27
_
_
Wrench
& Fastener
Size Guide
1/4" Bolt or Nut
5/16" Bolt or Nut
Wrench--7/16"
Wrench--I/2"
Hardware
Grade
Torque Specification
Chart
FOR STANDARD MACHINE HARDWARE (Tolerance _+20%)
©
©
©
SAEGrade 2
SAEGrade5
SAEGrade8
Size Of
Hardware
8-32
8-36
10-24
10-32
1/4-20
1/4-28
5/16-18
5/16-24
3/8-16
3/8-24
7/16-14
7/16-20
1/2-13
1/2-20
9/16-12
9/16-18
5/8-11
5/8-18
3/4-10
3/4-16
7/8-9
7/8-14
1-8
1-12
in/lbs
ft/Iba
Nm.
19
2.1
20
2.3
27
3.1
3!
3.5
in/lbs
ft/Ibs
Nm.
30
3.4
3!
3.5
43
4.9
49
5.5
in/Ibs
ft/Ibs
Nm.
41
4.6
43
4.9
60
6.8
68
7.7
66
7.6
8
76
8.6
18
11
15.0
17
12
16.3
19
28
27.2
38
23
31.3
35
38
40.8
58
35
47.6
55
58
68.0
75
55
74.8
98
65
88.4
118
75
102.0
128
98
122.4
158
188
136
188
188
217.6
268
188
244.8
388
148
190.4
488
155
210.8
448
220
299.2
588
248
326.4
648
10.9
12
16.3
13.6
14
19.0
23.1
25
34.0
25.8
27
34.0
40.8
45
612
47.6
58
68.0
68.0
78
95.2
74.8
88
108.8
102.0
118
149.6
122.4
128
163.2
149.6
158
204.0
163.2
178
231.2
204.0
220
299.2
244.8
248
326.4
353.6
386
525.0
408.0
428
571.2
544.0
888
816.0
598.4
868
897.6
788.8
980
1,244.0
870.4
1,000 1,360.0
NOTES
1. These torque values are to be used for all hardware
excluding: Iocknuts, self4apping
screws, thread forming
screws, sheet metal screws and socket head setscrews.
2. Recommended
seating torque values for Iocknuts:
a. for prevailing torque Iocknuts - use 65% of grade 5
torques.
b. for flange whizlock nuts and screws - use 135% of
grade 5 torques.
3. Unless otherwise noted on assembly drawings, all torque
values must meet this specification.
318" Bolt or Nut
Wrench--9/16"
7116" Bolt or Nut
Wrench
(Bolt)--5/8"
Wrench
(Nut)--11/16"
1/2" Bolt or Nut
Wrench--3/4"
PTS - 39
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