Torque Specifications - Simplicity Broadmotor Series Service & Repair Manual

Table of Contents

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

Length

Wrench & Fastener Size Guide

1/4

Washer

Lockwasher

Hex Nut

Nut, 1/2"

Inside

Diameter

Body

5/16

Torque Specification Chart

FOR STANDARD MACHINE HARDWARE (Tolerance ± 20%)

Hardware

Marks

Grade

SAE Grade 2

Size Of

in/lbs

Hardware

ft/lbs

Nm.

8-32

8-36

10-24

10-32

1/4-20

1/4-28

5/16-18

15.0

5/16-24

16.3

3/8-16

27.2

3/8-24

31.3

7/16-14

40.8

7/16-20

47.6

1/2-13

68.0

1/2-20

74.8

9/16-12

88.4

9/16-18

102.0

5/8-11

122.4

5/8-18

100

136

3/4-10

160

217.6

3/4-16

180

244.8

7/8-9

140

190.4

7/8-14

155

210.8

1-8

220

299.2

1-12

240

326.4

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.

7/16

3/8

DIA.

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1 General Information