3-29
TORQUE DATA
BOLT
SAE GRADE
SAE GRADE
SAE GRADE
GRADE
1 OR 2
5
8
MARKING
MEDIUM CARBON MEDIUM CARBON
MATERIAL
LOW CARBON
STEEL
ALLOY STEEL
Q & T
Q & T
MINIMUM
TENSILE
64,000 PSI
120,000 PSI
150,000 PSI
STRENGTH
(441 MPa)
(827 MPa)
(1034 MPa)
BOLT SIZE
RECOMMENDED TORQUE VALUES FT-LBS (N-m)
1/4
5 (6.7)
7 (9.5)
10.5 (14)
5/16
9 (12)
14 (19)
22 (30)
3/8
15 (20)
25 (34)
37 (50)
7/16
24 (32)
40 (54)
60 (81)
1/2
37 (50)
60 (81)
92 (125)
9/16
53 (72)
88 (119)
132 (179)
5/8
74 (100)
120 (163)
180 (244)
3/4
120 (163)
200 (271)
296 (401)
7/8
190 (258)
302 (409)
473 (641)
1
282 (382)
466 (632)
714 (968)
THE FOLLOWING RULES APPLY TO THE CHART:
1. Consult manufacturers' specific recommendations when available.
2. The chart may be used with coarse and fine thread fasteners lightly lubricated.
3. Increase torque by 20% when multiple tooth (shakeproof) lockwashers are used.
4. The torque values are given in foot-pounds (N·m).
5. Inch-pounds equivalent may be obtained by multiplying by 12.
Содержание IC-200-2H
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