Doosan 9/270 Operation And Maintenance Manual page 35

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