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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 equi pment s tandard hardware is def ined as Type 8 , c oarse t hread bol ts and nut s and t hru
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 c oated bo lts u sed wi th pho sphate c oated pre vailing t orque nut s (n uts wi th d istorted
threads or plastic inserts).
3.
Phosphate coated bolts used with copper plated weld nuts.
Markings o n bol t hea ds or n uts i ndicate m aterial grade O NLY and are NO T t o be u sed t o det ermine
required torque.
NOMINAL
THREAD
DIAMETER
STANDARD TORQUE ± 10%
KILOGRAM METER
(kg m)
FOOT POUNDS
(Ft. Lbs.)
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
