SERIES 60 SERVICE MANUAL Torque Specifications - Fasteners The proper bolt and nut torque is dependent on its size. Standard (non-metric) nut and bolt torque specifications are listed in Table 7. The proper torque specifications for metric nuts and bolts are listed in Table 8. Table 7 Standard (Non-metric) Fastener Torque Specifications Table 8 Class 10.9 Torque Specifications for Metric Fasteners All information subject to change without notice. (Rev.
2005) 6SE483 0507 Copyright © 2005 DETROIT DIESEL CORPORATION 49 Nut and Bolt Size, mm 280M or Better Torque, N·m 280M or Better Torque, lb·ft No.10-24 5-7 4-5 1/4 in.-20 9-12 7-9 1/4 in.-28 11-14 8-10 5/16 in.-18 18-23 13-17 5/16 in.-24 20-26 15-19 3/8 in.-16 41-47 30-35 3/8 in.-24 47-53 35-39 7/16 in.-14 62-68 46-50 7/16 in.-20 77-83 57-61 1/2 in.-13 96-102 71-75 1/2 in.-20 112-126 83-93 9/16 in.-12 122-136 90-100 9/16 in.-18 145-159 107-117 5/8 in.-11 186-199 137-147 5/8 in.-18 228-241 168-178 3/4 in.-10 325-339 240-250 3/4 in.-16 393-407 290-300 7/8 in.-9 556-569 410-420 7/8 in.-14 644-657 475-485 1 in.-8 789-799 580-590 1 in.-14 928-942 685-695 Nut and Bolt Size, mm Property Class 10.9 Torque, N·m Property Class 10.9 Torque, lb·ft M6 X 1.0 13-16 10-12 M8 X 1.25 30-38 22-28 M10 X 1.5 58-73 43-54 M12 X 1.75 101-126 75-93 M14 X 2.0 160-200 118-148 M16 X 2.0 245-306 181-226 M20 X 2.5 478-598 353-441