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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. Torque values in the
charts below use a torque coefficient of 0.17.
Diameter and Pitch (Inches) Clamp Load (Lbs.) Tightening Torque Clamp Load (Lbs.) Tightening Torque Clamp Load (Lbs.) Tightening Torque
1/4"-20
5/16"-18
3/8"-16
7/16"-14
1/2"-13
5/8"-11
3/4"-10
7/8"-9
1"-8
Diameter and Pitch (Inches) Clamp Load (Lbs.) Tightening Torque Clamp Load (Lbs.) Tightening Torque Clamp Load (Lbs.) Tightening Torque
1/4"-28
5/16"-24
3/8"-24
7/16"-20
1/2"-20
5/8"
3/4"
7/8"
Diameter and Pitch (mm) Clamp Load (Lbs.) Tightening Torque Clamp Load (Lbs.) Tightening Torque
M5-0.8
M6-1
M8-1.25
M10-1.5
M12-1.75
M16-2
M20-2.5
M22-2.5
M24-3
M30-3.5
Diameter and Pitch (mm) Clamp Load (Lbs.) Tightening Torque Clamp Load (Lbs.) Tightening Torque
M8-1
M10-1.25
M12-1.25
M16-1.5
M20-1.5
M22-1.5
M24-2
M30-2
Standard 3/4" wheel studs and nuts should be tightened to torque 400 Ft.-Lbs and standard 22mm studs should be tightened
to torque 640 Ft.-Lbs. During initial operation of the grain cart and then checked for proper torque after every 10 hours of use.
Failure to do so may damage wheel nut seats. Once seats are damaged, it will become impossible to keep nuts tight.
Bolt Torque Chart
SAE J429 Grade 2
1313
56 in-lbs
2163
115
3196
17 ft-lbs
4385
27
5853
41
9323
83
13797
147
11428
142
14992
212
1500
64 in-lbs
1395
74
3623
19 ft-lbs
4897
30
6598
47
10558
93
15385
163
12609
156
Metric Fasteners
1387
1968
3580
5671
8240
15320
23938
29669
34471
54819
3833
5985
9007
16331
27517
33688
38847
62823
TIGHTENING WHEEL NUTS
SAE Fasteners
Coarse Thread Series
SAE J429 Grade 5
2029
86 in-lbs
3342
178
4940
26 ft-lbs
6777
42
9046
64
14408
128
21322
227
29436
365
38616
547
Fine Thread Series
2319
99 in-lbs
3702
197
5599
30 ft-lbs
7568
47
10197
72
16317
144
23776
253
32479
403
Coarse Thread Series
Class 8.8
4 in-lbs
1985
7
2816
192
5123
32 ft-lbs
8115
55
11792
137
21924
267
34256
364
42457
461
49329
917
78448
Fine Thread Series
205 in-lbs
5486
33 ft-lbs
8565
723
12889
146
23371
307
38065
413
46601
520
53738
1051
86905
SAE J429 Grade 8
2864
122 in-lbs
4719
251
6974
37 ft-lbs
9568
59
12771
90
20340
180
30101
320
41556
515
54517
772
3274
139 in-lbs
5226
278
7905
42 ft-lbs
10684
66
14396
102
23036
204
33566
357
45853
568
Class 10.9
66 in-lbs
113
274
45 ft-lbs
79
196
382
521
660
1313
293 in-lbs
48 ft-lbs
86
209
425
572
719
1454
9
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