OC60-E2, OC95-E2, WSM ENGINE
S-11
[2] TIGHTENING TORQUES FOR GENERAL USE SCREWS, BOLTS AND
NUTS
When the tightening torques are not specified, tighten the screws, bolts and nuts according to the table below.
Screw and bolt material grades are shown by numbers punched on the screw and bolt heads. Prior to tightening,
be sure to check out the numbers as shown below.
Grade
Nominal
Diameter Unit
Standard Screw and Bolt Special Screw and Bolt
ft-lbs ft-lbs
M6 7.9 to 9.3 0.80 to 0.95 5.8 to 6.9 9.8 to 11.3 1.00 to 1.15 7.23 to 8.32
M8 17.7 to 20.6 1.8 to 2.1 13.0 to 15.2 23.5 to 27.5 2.4 to 2.8 17.4 to 20.3
M10 39.2 to 45.1 4.0 to 4.6 28.9 to 33.3 48.1 to 55.9 4.9 to 5.7 35.4 to 41.2
M12 62.8 to 72.6 6.4 to 7.4 46.3 to 53.5 77.5 to 90.2 7.9 to 9.2 57.1 to 66.5
Punched number Screw and bolt material grade
None or 4 Standard screw and bolt SS41, S20C
7 Special screw and bolt S43C, S48C (Refined)
0000009188E
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