Torque Chart - Western Tornado 78000-1 Installation Instructions Manual

TORQUE CHART

CAUTION
Read instructions before assembling.
Fasteners should be fi nger tight until
instructed to tighten according to the Torque
Chart. Use standard methods and practices
when attaching spreader, including proper
personal protective safety equipment.
Recommended Fastener Torque Chart
Inch Fasteners Grade 5 and Grade 8
Torque (ft-lb)
Size
Grade Grade
5
1/4-20 8.4 11.9
1/4-28 9.7 13.7
5/16-18 17.4 24.6
5/16-24 19.2 27.3
3/8-16 30.8 43.6
3/8-24 35.0 49.4
7/16-14 49.4 69.8
7/16-20 55.2 77.9
1/2-13 75.3 106.4
1/2-20 85.0 120.0
Metric Fasteners Class 8.8 and 10.9
Torque (ft-lb)
Size
Class Class
8.8 10.9
M6 x 1.00 7.7 11.1
M8 x 1.25 19.5 26.9
M10 x 1.50 38.5 53.3
M12 x 1.75 67 93
M14 x 2.00 107 148
M16 x 2.00 167 231
M18 x 2.50 222 318
These torque values apply to fasteners
except those noted in the instructions.
Lit. No. 99763/99764, Rev. 04
Torque (ft-lb)
Size
Grade
8 5
9/16-12 109
9/16-18 121
5/8-11 150
5/8-18 170
3/4-10 269
3/4-16 297
7/8-9 429
7/8-14 474
1-8 644
1-12 704
Torque (ft-lb)
Size
Class
8.8
M20 x 2.50 325
M22 x 2.50 428
M24 x 3.00 562
M27 x 3.00 796
M30 x 3.50 1117
M33 x 3.50 1468
M36 x 4.00 1952
SAFETY
Grade
8
154
171
212
240
376
420
606
669
909
995
Class
10.9
450
613
778
1139
1545
2101
2701
6 December 1, 2020