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Hardware identification& TorqueSpecifications
Common Hardware Types
Hex Head Capscrew
C ((((((((((((((((((((){(((((((((((((((((( O
Carriage Belt
¢ (((((((((((((((((((()((((((((((((((({((((O
Washer
Lockwasher
HexNut
Standard Hardware Sizing
When a washer or nut is identified as 112", 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 112 - 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_
mr
-" Screw,
--_ Body
Diameter
m4_
Nut, 1/2"
Inside
Diameter
1/2x2 "
Length
}
Wrench & Fastener Size Guide
@
114" Bolt or Nut 5/16" Bolt or Nut
Wrench--7/16" Wrench--1/2"
Hardware
Grade
Torque Specification Chart
FORSTANDARD MACHINE HARDWARE (Tolerance _+20%)
© © ©
SAEGrade2 SAEGrade5 SAEGrade8
SizeOf
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/Ibs
fifths Nm.
19 2.1
20 2.3
27 3.1
31 3.5
in/Ibs
ft/Ibs Nm.
30 3.4
31 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 10
11 15.0 17
12 16.3 19
20 27.2 30
23 31.3 35
30 40.8 50
35 47.6 55
50 68.0 75
55 74.8 90
65 88.4 110
75 102.0 120
90 122.4 150
100 136 180
160 217.6 260
180 244.8 300
140 190.4 400
155 210,8 440
220 299.2 580
240 326.4 640
10.9 12 16.3
13.6 14 19.0
23.1 25 34.0
25.8 27 34.0
40.8 45 61.2
47.6 50 68.0
68.0 70 95.2
74.8 80 108.8
102.0 110 149.6
122.4 120 163.2
149.6 150 204.0
163.2 170 231.2
204.0 220 299.2
244.8 240 326.4
353.6 386 525.0
408.0 420 571.2
544.0 600 816.0
598.4 660 897.6
788.8 900 1,244.0
870.4 1,000 1,360.0
NOTES
1. These torque values are to be used for all hardware
excluding: Iocknuts, self-tapping 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"
7/16" Bolt or Nut
Wrench (Bolt)--5/8"
Wrench (Nut)--11/16"
112" Bolt or Nut
Wrench--3/4"
PTS - 31