TYPE 8 PHOSPHATE COATED HARDWARE
This chart provides tightening torque for general purpose applications using original equipment standard
hardware as listed in the Parts Manual for the machine involved. DO NOT SUBSTITUTE. In most cases,
original equipment standard hardware is defined as Type 8, coarse thread bolts and nuts and thru hardened
flat washers (Rockwell "C" 38 - 45), all phosphate coated and assembled without supplemental lubrication
(as received) condition.
The torques shown below also apply to the following:
1. Phosphate coated bolts used in tapped holes in steel or gray iron.
2. Phosphate coated bolts used with phosphate coated prevailing torque nuts (nuts with distorted threads
or plastic inserts).
3. Phosphate coated bolts used with copper plated weld nuts.
Markings on bolt heads or nuts indicate material grade ONLY and are NOT to be used to determine required
torque.
1/4"
5/16"
3/8"
7/16"
1/2"
9/16"
5/8"
3/4"
7/8"
1"
1 - 1/8"
1 - 1/4"
1 - 3/8"
1 - 1/2"
1 - 3/4"
2
1.1
2.2
3.9
6.2
9.7
13.8
19.4
33.2
53.9
80.2
113.4
160.4
210.2
279.4
347.1
522.8
8
16
28
45
70
100
140
240
390
580
820
1160
1520
2020
2510
3780
S0309000 Standard Torque
Page 6
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