TM 5-3805-255-14
0131
TORQUE VALUES FOR STANDARD FASTENERS
000131
This chart provides tightening torque for general purpose applications using original equipment standard hardware
as listed in the Parts Catalog for the machine involved. DO NOT SUBSTITUTE. Original equipment standard hard-
ware is defined as IH Type 8, coarse thread bolts and nuts and thru hardened flat washer s (Rockwell "C" 38-45),
all phosphate coated and assembled without supplemental lubrication (as received condition).
The torques shown on the next page 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.
STANDARD TORQUE +10%
NOMINAL
THREAD
NEWTON
LB-FT
DIAMETER
METERS
1/4
7
10
5/16
14
19
3/8
24
32
7/16
38
51
1/2
60
80
9/16
80
110
5/8
115
155
3/4
200
270
7/8
320
440
1
480
650
1-1/8
590
800
1-1/4
830
1100
1-3/8
1100
1500
1-1/2
1400
1900
1-3/4
2300
3100
2
3400
4600
0131-4