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.
Minimum hardware tightening torques
In foot pounds
Metric hardware and locknuts
Make sure fastener threads are clean and not damaged
NOTE: A torque wrench is necessary to properly tighten hardware..
Nominal |
| Class 5..8 |
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| Class 8..8 |
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| Class 10..9 |
| Locknut Cl..8 | |||||
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Size | Unplated | Unplated | Unplated | W/cl8..8 Bolt | |||||||||||
W/zncr | W/zncr | W/zncr | |||||||||||||
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M4 | 15* (1..7) | 19* (2..2) | 23* (2..6) | 30* (3..4) | 33* (3..7) | 42* (4..8) | 16* (1..8) | ||||||||
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M6 | 51* (5..8) | 67* (7..6) | 79* (8..9) | 102* (12) | 115* (13) | 150* (17) | 56* (6..3) | ||||||||
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M8 | 124* (14) | 159* (18) | 195*(22) | 248* (28) | 274* (31) | 354* (40) | 133* (15) | ||||||||
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M10 | 21 | (28) | 27 | (36) | 32 | (43) | 41 | (56) | 45 | (61) | 58 | (79) | 22 | (30) | |
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M12 | 36 | (49) | 46 | (63) | 55 | (75) | 72 | (97) | 79 (107) | 102 | (138) | 39 | (53) | ||
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M16 | 89 (121) | 117 | (158) | 137 | (186) | 177 | (240) | 196 | (266) | 254 | (344) | 97 (131) | |||
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M20 | 175 | (237) | 226 | (307) | 277 | (375) | 358 | (485) | 383 | (519) | 495 | (671) | 195 | (265) | |
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M24 | 303 | (411) | 392 | (531) | 478 | (648) | 619 | (839) | 662 | (897) | 855 (1160) | 338 | (458) | ||
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NOTE: Torque values shown with* are inch pounds..
Identification of Hex Cap Screws and Carriage Bolts - Classes 5,6 and Up
Manufacturer’s Identification
XYZ | AB | 8.8 |
| CD | |
8.8 |
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Property Classes
Hex Nuts and Locknuts
Classes 05 and Up
Manufacturer’s Identification
AB |
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8 | AB |
8 | AB |
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Property Classes | Clock Marked |
