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435/485/535
6-21
Section 6 - Specifications
Hardware Torque Values - Metric
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.
Nominal
Size
Class 5.8 Class 8.8 Class 10.9
Locknut Cl.8
W/cl8.8 Bolt
Unplated
Plated
W/zncr
Unplated
Plated
W/zncr
Unplated
Plated
W/zncr
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)
Minimum hardware tightening torques
In foot pounds (newton-meters) for normal assembly
applications.
Metric hardware and locknuts
NOTE: Torque values shown with* are inch pounds.
Identification of Hex Cap Screws and Carriage Bolts - Classes 5,6 and Up
8
8
F6-1
XYZ
8.8
8.8
AB
CD
AB
Manufacturer’s Identification
Property Classes
Hex Nuts and Locknuts
Classes 05 and Up
AB
Manufacturer’s Identification
Property Classes Clock Marked
AB