Hardware
Page 84
E-451 & E-457
ME-45X-01
TORQUE GUIDELINES FOR STANDARD HARDWARE
Note:Torquevaluesspeciedareforcleandrythreads.
Note: Torque value used should be for lowest grade of hardware used. If a grade 2 nut is used on a grade 8
bolt, use grade 2 torque value.
Hardware Identication
Hex Head Bolts and Screws
The grade of SAE bolts and screws are identied by markings on the head
as illustrated to the right.
The grade of a metric hex head bolt or screw is cast directly on the head.
Below is an example of a 10.9. The location and style of the text will vary.
SAE Grade 2
SAE Grade 5
SAE Grade 8 SAE Grade 9
Other types of bolts and screws
Truss Head, Grade 2
Carriage Bolt, Grade 2