Specifications, Unified inch bolt and screw torque values, Section 45 – John Deere OMPC20964 User Manual
Page 150
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Specifications
DX,TORQ1
–19–24APR03–1/1
Unified Inch Bolt and Screw Torque Values
TS1671
–UN–01MAY03
Bolt or
SAE Grade 1
SAE Grade 2
a
SAE Grade 5, 5.1 or 5.2
SAE Grade 8 or 8.2
Screw
Lubricated
b
Dry
c
Lubricated
b
Dry
c
Lubricated
b
Dry
c
Lubricated
b
Dry
c
Size
N•m
lb-in
N•m
lb-in
N•m
lb-in
N•m
lb-in
N•m
lb-in
N•m
lb-in
N•m
lb-in
N•m
lb-in
1/4
3.7
33
4.7
42
6
53
7.5
66
9.5
84
12
106
13.5
120
17
150
N•m
lb-ft
N•m
lb-ft
5/16
7.7
68
9.8
86
12
106
15.5
137
19.5
172
25
221
28
20.5
35
26
N•m
lb-ft
N•m
lb-ft
3/8
13.5
120
17.5
155
22
194
27
240
35
26
44
32.5
49
36
63
46
N•m
lb-ft
N•m
lb-ft
N•m
lb-ft
7/16
22
194
28
20.5
35
26
44
32.5
56
41
70
52
80
59
100
74
N•m
lb-ft
1/2
34
25
42
31
53
39
67
49
85
63
110
80
120
88
155
115
9/16
48
35.5
60
45
76
56
95
70
125
92
155
115
175
130
220
165
5/8
67
49
85
63
105
77
135
100
170
125
215
160
240
175
305
225
3/4
120
88
150
110
190
140
240
175
300
220
380
280
425
315
540
400
7/8
190
140
240
175
190
140
240
175
490
360
615
455
690
510
870
640
1
285
210
360
265
285
210
360
265
730
540
920
680
1030
760
1300
960
1-1/8
400
300
510
375
400
300
510
375
910
670
1150
850
1450
1075
1850
1350
1-1/4
570
420
725
535
570
420
725
535
1280
945
1630
1200
2050
1500
2600
1920
1-3/8
750
550
950
700
750
550
950
700
1700
1250
2140
1580
2700
2000
3400
2500
1-1/2
990
730
1250
930
990
730
1250
930
2250
1650
2850
2100
3600
2650
4550
3350
Torque values listed are for general use only, based on the strength of the
Replace fasteners with the same or higher grade. If higher
bolt or screw. DO NOT use these values if a different torque value or
grade fasteners are used, tighten these to the strength of the
tightening procedure is given for a specific application. For plastic insert or
original. Make sure fastener threads are clean and that you
crimped steel type lock nuts, for stainless steel fasteners, or for nuts on
properly start thread engagement. When possible, lubricate
U-bolts, see the tightening instructions for the specific application. Shear
plain or zinc plated fasteners other than lock nuts, wheel bolts
bolts are designed to fail under predetermined loads. Always replace shear
or wheel nuts, unless different instructions are given for the
bolts with identical grade.
specific application.
a
Grade 2 applies for hex cap screws (not hex bolts) up to 6. in (152 mm) long. Grade 1 applies for hex cap screws over 6 in. (152 mm) long,
and for all other types of bolts and screws of any length.
b
“Lubricated” means coated with a lubricant such as engine oil, fasteners with phosphate and oil coatings, or 7/8 in. and larger fasteners with
JDM F13C zinc flake coating.
c
“Dry” means plain or zinc plated without any lubrication, or 1/4 to 3/4 in. fasteners with JDM F13B zinc flake coating.
45-1
121907
PN=150