Kato Engineering Standard AC Generator - Metric Torque Values

Page 47
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1-NM = 0.737 ft-lbs. = 8.85 in-lbs.
ASTM & SAE grade markings
Metric grade markings
Grade 2
Grade 5
Grade 8
Class 8.8
Class 10.9
Ft-Lbs Tol N-M Tol Ft-Lb
s
Tol N-M Tol Ft-Lbs Tol N-M Tol Ft-Lbs Tol N-M Tol
M4 x .70 1.1 1.5 2 2.7 2.9
M5 x .80 2.3 3.1 4 5.3 6
M6 x 1.00 4
1 5.2 1 7 1 9.3 2 4151102143
M7 X 1.00 6.5 1 8.7 2 11 1 15 3 16 5 34 7
M8 x 1.25 10 2 13 3 18 2 24 5 11 2 15 4 25 10 54 14
M10 x 1.50 20 4 27 5 32 4 43 9 13 3 18 4 47 15 95 20
M12 x 1.75 34 7 45 9 58 7 77 15 19 4 26 5 83 20 135 27
M14 x 2.00 54 10 72 13 94 10 125 23 132 30 200 40
M16 x 2.00 80 13 108 18 144 13 192 32 196 40 275 55
M18 x 2.50 114 22 152 29 190 22 253 50 269 50 500 70
M20 x 2.50 162 23 216 30 260 23 347 50 366 60 800 80
M22 x 2.50 202 23 269 31 368 23 491 55 520 90 1200 120
M24 x 3.00 245 25 327 33 470 25 627 65 664 120 1650 160
M27 x 3.00 360 40 480 52 707 40 943 100 996 180 2400 250
M30 x 3.50 500 50 667 70 967 50 1289 130 1357 230 3100 300
Metric Torque Values
Grade 10.9
Foot-PoundFoot-Pound Newton-Meter Newton-Meter
Grade 8.8
GASKETED COVERS
Newton-MeterFoot-Pound
Grade 6.9 to 8.8
SCREW
SIZE
Grade 4.8 to 6.8
Foot-Pounds Newton-Meter