C-2 Appendix C, Conversions
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TORQUE MASTER VALUES C.2
GENERAL
Torque specifications for specific components are listed in
each section at the point of use. When converting to Newton-
meters, use the formulas given under the metric chart. For all
other steel fasteners, use the values listed in one of the
tables below. In the English table, torque figures are listed in
ft-lbs, except those marked with an asterisk (*), which are
listed in in-lbs. In the metric table, figures are listed in New-
ton-meters.
1WARNING
1WARNING
The quality fasteners used on Buell motorcycles have
specific strength, finish and type requirements to per-
form properly in the assembly and the operating environ-
ment. Use only genuine Buell replacement fasteners
tightened to the proper torque. Substitution could cause
fastener failure, which could result in death or serious
injury.
*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 C-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 C-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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