10
Bolt Torque Specifications
TIGHTENING WHEEL NUTS:
Torque 9/16”-18 lug nuts on wheels to 170 ft-lbs after the first 10, 25, and 50 miles of driving, then recheck
torque every 50 hours or every year, whichever comes first. Failure to do so may damage wheel nut seats. Once seats are damaged it
will become impossible to keep nuts tight.
Coarse Thread Series
Grade 5
Grade 8
Diameter and Pitch (Inches) Dry
Oiled
Dry
Oiled
1/4”-20
8 ft-lbs
6 ft-lbs
12 ft-lbs
9 ft-lbs
5/16”-18
17
13
25
18
3/8”-16
30
23
45
35
7/16”-14
50
35
70
55
1/2”-13
75
55
110
80
9/16”-12
110
80
150
110
5/8”-11
150
110
220
170
3/4”-10
260
200
380
280
7/8”-9
430
320
600
460
1”-8
640
480
900
680
Fine Thread Series
Diameter and Pitch (Inches) Clamp Load (Lbs.) Tightening Torque Clamp Load (Lbs.) Tightening Torque
1/4”-28
10 ft-lbs
7 ft-lbs
14 ft-lbs
10 ft-lbs
5/16”-24
19
14
29
20
3/8”-24
35
25
50
40
7/16”-20
55
40
80
60
1/2”-20
90
65
120
90
9/16”-18
120
90
170
130
5/8”-18
180
130
240
180
3/4”-16
300
220
420
320
7/8”-14
470
360
660
500
SAE Fasteners
Always tighten hardware to these values unless a different torque or tightening procedure is listed for specific application. Fasteners must
always be replaced with the same grade as specified in the manual parts list. Always use the proper tool for tightening hardware. Make
sure fastener threads are clean and you start thread engagement properly.
Use these values when tightening all bolts and nuts with
the exception of wheel nuts.
Stud and Wheel Nut Torque Specifications
Stud
Tightening Torque
1/2”-20
80 ft-lbs
9/16”-18
170 ft-lbs
5/8”-18
350 ft-lbs
3/4”-16
400 ft-lbs
20mm
475 ft-lbs
22mm
640 ft-lbs
Always tighten hardware to these values unless a different torque or tightening procedure is listed for specific application. Fasteners must
always be replaced with the same grade as specified in the manual parts list. Always use the proper tool for tightening hardware. Make
sure fastener threads are clean and you start thread engagement properly.
Use these values when tightening all studs and wheel
nuts.
Содержание SpeedTender LC290
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