Case 435 - Torque Specifications

INTRODUCTION
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 b ein g 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.
GRADE
1or2
5
5.1 5.2 8 8.2
L9 (Alloy)
SAE Markings
for Bolts and
Cap Screw s
2
5
8
L9 (Alloy)
SAE Markings
for He x Nut
s
GRADE 2 * GRADE 5, 5.1 or 5.2 GRADE 8 or 8.2 GRADE L9 (Alloy)
Dry **
Lubricated
**
Dry**
Lubricated
**
Dry**
Lubricated
**
Head Nut
SIZE
Nm
lb/ft
Nm
lb/ft
Nm
lb/ft
Nm
lb/ft
Nm
lb/ft
Nm
lb/ft
Nm
lb/ft
Nm
lb/ft
1/4
UNF
7.5 5.5 5.7
4.2 10.8 8 8.5 6.3 16.3 12 12.2 9 13.6 10 14.9 11
1/4
UNC
8.5 6.3 6.4 4.7 13.6 10 9.8 7.2 19 14 13.6 1 0 16.3 12 17.6 13
5/16
UNF
1511118 231718133324241826192821
5/16
UNC
1612129 261919143727272027203123
3/8
UNF
27 20 20 1 5 41 3 0 31 2 3 61 4 5 47 3 5 41 30 45 3 3
3/8
UNC
31 23 23 1 7 47 3 5 34 2 5 68 5 0 47 3 5 47 35 52 3 8
7/16
UNF
43 32 33 2 4 68 5 0 47 3 5 95 7 0 68 5 0
75 55
81 60
7/16
UNC
49 36 37 2 7
75 55
544010880816081608865
1/2
UNF
68 50 47 3 5 102
75 75 55
149 110 108 80 115 85 129 95
1/2
UNC
75 55
54 40 115 85 88 65 163 120 122 90 129 95 142 105
9/16
UNF
95 70
75 55
149 110 108 80 203 150 149 110 163 120 190 140
9/16
UNC
108 80 81 60 163 120 122 90 231 170 17 6 130 183 135 203 150
6-75491 1 04/05/2005
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