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Torque Specification Chart - Simplicity 4531 Illustrated Parts List

Catcher, clean sweep twin, 38"
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Hardware Identification & Torque Specifications
Common Hardware Types
Hex Head Capscrew
Carriage Bolt
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 Nominal size , or body diameter is 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.
Screw, 1/2 x 2
Body
Diameter
Wrench & Fastener Size Guide
1/4
1/4" Bolt or Nut
Wrench—7/16"
Washer
Lockwasher
Hex Nut
Nut, 1/2"
Inside
Diameter
Body
Length
5/16
5/16" Bolt or Nut
Wrench—1/2"

Torque Specification Chart

FOR STANDARD MACHINE HARDWARE (Tolerance ± 20%)
Hardware
Grade
SAE Grade 2
Size Of
in/lbs
Hardware
ft/lbs
8-32
19
8-36
20
10-24
27
31
10-32
1/4-20
66
1/4-28
76
5/16-18
11
5/16-24
12
3/8-16
20
3/8-24
23
7/16-14
30
7/16-20
35
1/2-13
50
1/2-20
55
9/16-12
65
9/16-18
75
5/8-11
90
5/8-18
100
3/4-10
160
3/4-16
180
7/8-9
140
7/8-14
155
1-8
220
1-12
240
1. These torque values are to be used for all hardware
excluding: locknuts, self-tapping screws, thread forming
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.
3/8
3/8" Bolt or Nut
7/16" Bolt or Nut
Wrench—9/16"
Wrench (Bolt)—5/8"
Wrench (Nut)—11/16"
No
Marks
SAE Grade 5
in/lbs
Nm.
ft/lbs
Nm.
2.1
30
3.4
2.3
31
3.5
3.1
43
4.9
49
3.5
5.5
7.6
8
10.9
8.6
10
13.6
15.0
17
23.1
16.3
19
25.8
27.2
30
40.8
31.3
35
47.6
40.8
50
68.0
47.6
55
74.8
68.0
75
102.0
74.8
90
122.4
88.4
110
149.6
102.0
120
163.2
122.4
150
204.0
136
180
244.8
217.6
260
353.6
244.8
300
408.0
190.4
400
544.0
210.8
440
598.4
299.2
580
788.8
326.4
640
870.4
NOTES
7/16
DIA.
1/2" Bolt or Nut
Wrench—3/4"
SAE Grade 8
in/lbs
ft/lbs
Nm.
41
4.6
43
4.9
60
6.8
68
7.7
12
16.3
14
19.0
25
34.0
27
34.0
45
61.2
50
68.0
70
95.2
80
108.8
110
149.6
120
163.2
150
204.0
170
231.2
220
299.2
240
326.4
386
525.0
420
571.2
600
816.0
660
897.6
900
1,244.0
1,000
1,360.0
1/2
DIA.

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