Doosan 9/270 - Page 35

32 MAINTENANCE
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
TORQUE VALUES
TABLE 1 INCH FASTENERS
TYPICAL RECTANGULAR TORQUE PATTERN
TYPICAL SQUARE TORQUE PATTERN
TYPICAL CIRCULAR TORQUE PATTERN
CAPSCREW
OR NUT
THREAD SIZE
AND PITCH
NOMINAL DESIGN TORQUE
8AE J249
GRADE 5
(HEAD MARKING)
8AE J249
GRADE 8
(HEAD MARKING)
(Nm.) (FT-LBF) (Nm.) (FT-LBF)
1/4 - 20 11 8 16 12
5/16 - 18 24 17 33 25
3/8 - 16 42 31 59 44
7/16 - 14 67 49 95 70
1/2 - 13 102 75 144 106
9/16 - 12 148 109 208 154
5/8 - 11 203 150 287 212
3/4 - 10 361 266 509 376