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HardwaregdefitificatiaH Terqu8 SpBcificatigfis
Common Hardware Types
HexHead Capscrew
CarriageBolt
(_Washer
(_
Lockwasher
O
HexNut
Standard Hardware Sizing
When a washer or nut is identified
as 1/2", this is the
Nominal size, meaning the inside diameter is 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 Nominalsize,
or bodydiameteris
1/2 inch; the
second number represents the threads per inch (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_
L
Nut, 1/2"
Inside
Diameter
Screw, 1/2 x 2 -3
OadyJ |
Diameterl
Body'_
-
Torque Specification Chart
FORSTANDARD MACHINEHARDWARE (Tolerance _*20%)
Hardware
@
Grade
SAE Grade 2
Size Of
in//bs
Hardware ft]]bs
Nm
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
19
21
20
2_3
27
31
31
35
66
76
76
86
11
150
12
163
20
272
23
313
30
40 8
35
476
50
68 0
55
74 8
65
88 4
75
102 0
90
122 4
100
136
160
217 6
180
2448
140
1904
155
210.8
220
2992
240
3264
©
©
SAE Grade 5
8AEGrade 8
in/Ibs
in_b_
flJ]bs
Nm.
Wlbs
Nm
113'441
31
35
43
4 9
60
_4_
5 5
68
8
109
12
10
136
14
17
231
25
19
25 8
27
30
40 8
45
35
47 6
50
50
68 0
70
55
74 8
80
75
102 0
110
90
1224
120
110
1496
150
120
163.2
170
150
2040
220
180
2448
240
260
3536
386
300
408_0
420
400
5440
600
440
5984
660
580
788_8
900
640
8704
1,0OO
NOTES
46
49
68
77
163
190
34 0
34 0
61 2
68 0
95,2
1088
1496
1632
2040
2312
299,2
3264
525,0
5712
8160
897 6
1,244 8
1,360 0
1 These torque valcasare to be used for all hardware
excluding: Iocknuts, self-tapping screws, threadforming
screws, sheet metal screws and socket head setscrews
2. Recommended seating torque values for locknuts:
a
for prevailing torque locknuts- 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
Wrench & Fastener Size Guide
1/4" Bolt or Nut
5/16" Bolt or Nut
3!8" Bolt or Nut
7/16" Bolt or Nut
Wrench--7/16"
Wrench--I/2"
Wrench--9/16"
Wrench (Bolt)--5/8"
Wrench (Nut)--11/16"
1/2" Bolt or Nut
Wrench--3/4"
PTS - 45
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