40
TORQUE SPECIFICATION FOR BOLTS
Torque For General SAE Bolts
The following minimum and maximum torque values are for use on steel hardware coated with zinc phosphate & oil and
zinc dichromate in general applications and where torque values are not otherwise specified. The same torque values
apply to course or fine threads.
THREAD SIZE
CAP SCREW BOLT AND NUT
SAE GRADE 5
CAP SCREW BOLT AND NUT
SAE GRADE 8
SOCKET HEAD CAP SCREW
OR 12–POINT HEAD CAP
SCREW
1/4”
9 – 10 N•m
(80 – 90 in-lb)
13 – 14 N•m
(110 – 120 in-lb)
15 – 16 N•m
(130 – 145 in-lb)
5/16”
21 – 23 N•m
(180 – 200 in-lb)
24 – 27 N•m
(215 – 240 in-lb)
31 – 34 N•m
(270 – 300 in-lb)
3/8”
34 – 38 N•m
(25 – 28 ft-lb)
48 – 54 N•m
(35 – 40 ft-lb)
61 – 68 N•m
(45 – 50 ft-lb)
7/16”
54 – 61 N•m
(40 – 45 ft-lb)
82 – 88 N•m
(60 – 65 ft-lb)
95 – 102 N•m
(70 – 75 ft-lb)
1/2”
88 – 95 N•m
(65 – 70 ft-lb)
125 – 135 N•m
(90 – 100 ft-lb)
150 – 160 N•m
(110 – 120 ft-lb)
9/16”
125 – 135 N•m
(90 – 100 ft-lb)
170 – 190 N•m
(125 – 140 ft-lb)
205 – 225 N•m
(150 – 165 ft-lb)
5/8”
170 – 190 N•m
(125 – 140 ft-lb)
240 – 260 N•m
(175 – 190 ft-lb)
285 – 310 N•m
(210 – 230 ft-lb)
3/4”
300 – 330 N•m
(220 – 245 ft-lb)
410 – 450 N•m
(300 – 330 ft-lb)
490 – 540 N•m
(360 – 400 ft-lb)
7/8”
450 – 490 N•m
(330 – 360 ft-lb)
645 – 710 N•m
(475 – 525 ft-lb)
600 – 650 N•m
(815 – 880 ft-lb)
1”
645 – 710 N•m
(475 – 525 ft-lb)
985 – 1085 N•m
(725 – 800 ft-lb)
1220 – 1360 N•m
(900 – 1000 ft-lb)
1-1/8”
880 – 975 N•m
(650 – 720 ft-lb)
1425 – 1600 N•m
(1050 – 1175 ft-lb)
1770 – 1970 N•m
(1300 – 1450 ft-lb)
1-1/4”
1220 – 1360 N•m
(900 – 1000 ft-lb)
2000 – 2200 N•m
(1475 – 1625 ft-lb)
2510 – 2720 N•m
(1850 – 2000 ft-lb)
1-3/8”
1630 – 1830 N•m
(1200 – 1350 ft-lb)
2720 – 2980 N•m
(2000 – 2200 ft-lb)
3330 – 3660 N•m
(2450 – 2700 ft-lb)
1-1/2”
2040 – 2240 N•m
(1500 – 1650 ft-lb)
3520 – 3870 N•m
(2600 – 2850 ft-lb)
4270 – 4680 N•m
(3150 – 3450 ft-lb)
NOTE:
Use the torque value for the part having the lesser grade when a fastener and nut are used together but have a
different grade.
Torque For General Metric Bolts
Torque values shown in table below apply to combinations of a fastener and nut having the same property class, and both
being coated with zinc phosphate and oil or zinc dichromate.
Summary of Contents for Auger 75 DDH
Page 2: ......
Page 12: ...10 Figure 4 C221899a SAFETY AND TRAINING RESOURCES ...
Page 29: ......
Page 52: ...50 troubleshooting 29 W warranty 48 welding safety 7 ALPHABETICAL INDEX ...
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