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SECTION 5 - SPECIFICATIONS
5-34
HARDWARE TORQUE VALUES
Check the tightness of hardware periodically.
Use the following charts to determine the
correct torque when checking, adjusting or
replacing hardware on the tractor.
IMPORTANT: DO NOT use the values listed in
the charts if a different torque value or tightening
procedure is specified in this manual for a
specific application. Torque values listed are for
general use only.
Make sure fastener threads are clean and not
damaged
NOTE: A torque wrench is necessary to
properly tighten hardware.
MINIMUM HARDWARE TIGHTENING TORQUES
IN FOOT POUNDS (NEWTON-METERS) FOR NORMAL ASSEMBLY APPLICATIONS
METRIC HARDWARE AND LOCKNUTS
M4 15* (1.7) 19* (2.2) 23* (2.6) 30* (3.4) 33* (3.7) 42* (4.8) 16* (1.8)
M6 51* (5.8) 67* (7.6) 79* (8.9) 102* (12) 115* (13) 150* (17) 56* (6.3)
M8 124* (14) 159* (18) 195*(22) 248* (28) 274* (31) 354* (40) 133* (15)
M10 21 (28) 27 (36) 32 (43) 41 (56) 45 (61) 58 (79) 22 (30)
M12 36 (49) 46 (63) 55 (75) 72 (97) 79 (107) 102 (138) 39 (53)
M16 89 (121) 117 (158) 137 (186) 177 (240) 196 (266) 254 (344) 97 (131)
M20 175 (237) 226 (307) 277 (375) 358 (485) 383 (519) 495 (671) 195 (265)
M24 303 (411) 392 (531) 478 (648) 619 (839) 662 (897) 855 (1160) 338 (458)
NOMINAL
SIZE
CLASS 5.8 CLASS 8.8 CLASS 10.9
LOCKNUT
CL.8
w/CL8.8
BOLTUNPLATED PLATED
w/ZnCr
UNPLATED UNPLATEDPLATED
w/ZnCr
PLATED
w/ZnCr
NOTE: Torque values shown with * are inch pounds.
IDENTIFICATION
HEX CAP SCREWS AND CARRIAGE BOLTS
CLASSES 5.6 AND UP.
MANUFACTURER’S IDENTIFICATION
PROPERTYCLASS
HEX NUTS AND LOCKNUTS
CLASSES 05 AND UP.
MANUFACTURER’S IDENTIFICATION
PROPERTY CLASS CLOCK MARKING