Doosan 9/270 Operation And Maintenance Manual page 36

TABLE 2
PROPERTY
GRADE 8.8
(HEAD MARKING)
CAPSCREW
OR NUT
THREAD SIZE
AND PITCH
(Nm.)
M6 X 1.0 11
M8 X 1.25 26
M10 X 1.5 52
M12 X 1.75 91
M14 X 2 145
M16 X 2 226
M20 X 2.5 441
METRIC FASTENERS
NOMINAL DESIGN TORQUE
PROPERTY
GRADE 10.9
(HEAD MARKING)
(FT-LBF) (Nm.) (FT-LBF)
8 15
19 36
38 72
67 126
107 200 148
166 313 231
325 610 450
PROPERTY
GRADE 12.9
(HEAD MARKING)
(Nm.) (FT-LBF)
11 18 13
27 43 31
53 84 62
93 147 109
234 173
365 270
713 526
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
MAINTENANCE
TYPICAL RECTANGULAR TORQUE
PATTERN
TYPICAL SQUARE TORQUE PATTERN
TYPICAL CIRCULAR TORQUE PATTERN
33