Torque ( - A.90.A.10) - Case 435 Repair Manual

Torque ( - A.90.A.10)

435, 445
BOLT TORQUE INFORMATION
DECIMAL HARDWARE
1. Fasteners should be replaced with the same or higher grade. If higher grade fasteners are used, these
should only be tightened to the strength of the original.
2. Make sure the fasteners threads are clean and that thread engagement is started. This will prevent them from
failing when being tightened.
3. Tighten plastic insert or crimped steel-type lock nuts to approximately 50 % of the dry torque, applied to the
nut, not to the bolt head. Tighten toothed or serrated-type lock nuts to the full torque value.
4. The L9 (Alloy) fasteners torque values are for a bolt, nut, and two washers. When using L9 (Alloy) fasteners,
do not use the values in this table for tapped holes.
SAE Markings
for Bolts and
Cap Screws
2
SAE Markings
for Hex Nuts
GRADE 2 *
Dry **
SIZE Nm lb/ft
7.5 5.5
1/4
UNF
1/4 8.5 6.3
UNC
5/16 15 11
UNF
5/16 16 12
UNC
3/8 27 20
UNF
3/8 31 23
UNC
43 32
7/16
UNF
7/16 49 36
UNC
1/2 68 50
UNF
1/2 75 55
UNC
9/16 95 70
UNF
108 80
9/16
UNC
1 or 2 5
5
GRADE 5, 5.1 or 5.2
Lubricated Dry**
**
Nm lb/ft Nm lb/ft
5.7 4.2 10.8 8
6.4 4.7 13.6 10
11 8 23 17
12 9 26 19
20 15 41 30
23 17 47 35
33 24 68 50
75 55
37 27
47 35 102 75
54 40 115 85
75 55 149 110
81 60 163 120
INTRODUCTION
GRADE
5.1 5.2
GRADE 8 or 8.2
Lubricated Dry**
**
Nm lb/ft Nm
8.5 6.3 16.3 12
9.8 7.2 19 14
18 13 33 24
19 14 37 27
31 23 61 45
34 25 68 50
47 35 95 70
54 40 108 80
75 55 149 110
88 65 163 120
108 80 203 150
122 90 231 170
6-75491 1 04/05/2005
7
8 8.2
8
GRADE L9 (Alloy)
Lubricated Head
**
lb/ft Nm lb/ft Nm
12.2 9 13.6 10
13.6 10 16.3 12
24 18 26
27 20 27
47 35 41
47 35 47
68 50 75
81 60 81
108 80 115
122 90 129
149 110 163
176 130 183
L9 (Alloy)
L9 (Alloy)
Nut
lb/ft Nm lb/ft
14.9 11
17.6 13
19 28 21
20 31 23
30 45 33
35 52 38
55 81 60
60 88 65
85 129 95
95 142 105
120 190 140
135 203 150