B-3
*Torque values in
in-lbs.
foot-pounds
(ft-lbs) x 1.356 =
Newton-meters
(Nm)
inch-pounds
(in-lbs) x 0.113 =
Newton-meters
(Nm)
Table B-2. English Torque Values
FASTENER
TYPE
MINIMUM
TENSILE
STRENGTH
MATERIAL
BODY SIZE OR OUTSIDE DIAMETER
# (number) in. (inches)
2
3
4568101/45/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1
SAE 2
STEEL
74,000
PSI
LOW
CARBON 6 12 20 32 47 69 96 155 206 310
SAE 5
STEEL
120,000
PSI
MEDIUM
CARBON HEAT
TREAT
14*
22* 10 19 33 54 78 114 154 257 382 587
SAE 7
STEEL
133,000
PSI
MEDIUM
CARBON
ALLOY
13 25 44 71 110 154 215 360 570 840
SAE 8
STEEL
150,000
PSI
MEDIUM
CARBON
ALLOY
14 29 47 78 119 169 230 380 600 900
SAE 8
STEEL
150,000
PSI
MEDIUM
CARBON
ALLOY
14 29 47 78 119 169 230 380 600 900
SOCKET
SET
SCREW
212,000
PSI
HIGH CARBON
QUENCHED
TEMPERED
9* 16* 30* 70* 140* 18 29 43 63 100 146
STUDS Use SAE 2, 5 and 8 values when grade is known, with nut of sufficient strength.
Table B-3. Metric Torque Values
FASTENER
TYPE
MINIMUM
TENSILE
STRENGTH
MATERIAL
BODY SIZE OR OUTSIDE DIAMETER
# (number) mm (millimeters)
2
3
4568106.47.99.511.1 12.7 14.3 15.9 19.1 22.2 25.4
SAE 2
STEEL
5,202
kg/cm
2
LOW
CARBON 8.3 16.6 27.7 44.3 65.0 95.4 132.8 214.4 283.5 428.7
SAE 5
STEEL
8,436
kg/cm
2
MEDIUM
CARBON HEAT
TREAT
1.6
2.5 13.8 26.3 45.6 74.7 107.9 157.7 213.0 355.4 528.3 811.8
SAE 7
STEEL
9,350
kg/cm
2
MEDIUM
CARBON
ALLOY
18.0 34.6 60.8 98.2 152.1 213.0 297.3 497.9 788.3 1161.7
SAE 8
STEEL
10,545
kg/cm
2
MEDIUM
CARBON
ALLOY
19.4 40.1 65.0 107.9 164.6 233.7 318.1 525.5 829.8 1220.0
SAE 8
STEEL
10,545
kg/cm
2
MEDIUM
CARBON
ALLOY
19.4 40.1 65.0 107.9 164.6 233.7 318.1 525.5 829.8 1220.0
SOCKET
SET
SCREW
14,904
kg/cm
2
HIGH CARBON
QUENCHED
TEMPERED
1.0 1.8 3.4 8.1 16.1 24.9 40.1 59.5 87.1 138.3 201.9
STUDS Use SAE 2, 5 and 8 values when grade is known, with nut of sufficient strength.
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