23
Bolt Torque
As used on this machine
• Bolt torque table shown below gives torque values for various bolts used.
• This chart is for non-lubricated threads.
• Replace with same strength bolt.
Torque Speci cations. Torque values are identi ed by their head markings.
Diameter SAE 2 SAE 5 SAE 8
“A”
ft-lb N.m ft-lb N.m ft-lb N.m
1/4 6 (8) 8 (11) 12 (16)
5/16 11 (15) 17 (24) 25 (33)
3/8 20 (27) 31 (42) 44 (59)
7/16 32 (43) 49 (67) 70 (95)
1/2 49 (66) 76 (105) 105 (145)
5/8 97 (130) 150 (205) 210 (285)
3/4 144 (195) 265 (360) 375 (510)
7/8 165 (225) 430 (585) 605 (820)
1 250 (340) 645 (875) 910 (1230)
1 1/8 355 (480) 795 (1080) 1290 (1750)
1 1/4 500 (680) 1120 (1520) 1820 (2460)
1 1/2 870 (1180) 1950 (2640) 3160 (4290)
Allen head cap screw are similar to
SAE 8 quality
These torques are for reference only. Not all these sizes and grades are necessarily used in this
machine. Bolts that are used as a pivot or hinge have to be used with a locknut, therefore only
tighten enough to secure the bolt and still allowing the part to rotate freely.
SAE 2 SAE 8SAE 5
A
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