Snorkel AB85J, Repair Parts Manual

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AB85J – 0421900 Maintenance – 19
Fastener Torque Chart
Torque chart information:
y
Consult manufacturers' specific recommendations, when available.
y
The chart may be used with both coarse and fine thread fasteners lightly lubricated.
y
Increase torque by 20% when multiple tapered tooth (shake proof) lock washers are used.
y
The torque values are given in foot-pounds.
y
Inch/pound equivalent may be obtained by multiplying by 12.
Bolt
Grade
SAE Grade
1 or 2
SAE Grade
5
SAE Grade
6
SAE Grade
8
Marking
Minimum Tensile
Strength
64,000 psi. 105,000 psi 133,000 psi. 150,000 psi
Material
Definition
Low
Carbon
Steel
Medium
Carbon
Steel
Tempered
Medium Carbon
Steel
Quenched and
Tempered
Medium Carbon
Alloy Steel
Quenched and
Tempered
Indeterminate
Quality
Minimum
Commercial
Quality
Medium
Commercial
Quality
Bolt Size
1/4
5/16
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1
5
9
15
24
37
53
74
120
190
282
7
14
25
40
60
88
120
200
302
466
10
19
34
55
85
120
167
280
440
660
10.5
22
37
60
92
132
180
296
473
714
Recommended Torque Value (ft lbs)