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SPECIFICATIONS
46 Specifications TP-6901 6/14
NOTE:
1. The torque values above are general guidelines. Always use the torque values specified in the service
manuals and/or assembly drawings when they differ from above torque values.
2. The torque values above are based on new plated threads. Increase torque values by 15% if non-plated
threads are used.
3. Hardware threaded into aluminum must have either two diameters of thread engagement or a 30% or more
reduction in the torque to prevent stripped threads.
4. Torque values are calculated as equivalent stress loading on American hardware with an approximate preload
of 90% of the yield strength and a friction coefficient of 0.125.
Metric Fasteners Torque Specifications
Size
Torque
Measurement
Assembled into Cast Iron or Steel Assembled into
Aluminum Grade
5.8 or 8.8Grade 5.8 Grade 8.8 Grade 10.9
M6 x 1.00 N•m (ft.lb.) 6.2 (4.6) 12 (9) 13.6 (10)
See Note 3
M8 x 1.25 N•m (ft.lb.) 15.0 (11) 29.6 (22) 33.0 (24)
M8 x 1.00 N•m (ft.lb.) 16.0 (11) 24.0 (18) 34.0 (25)
M10 x 1.50 N•m (ft.lb.) 30.0 (22) 52.5 (39) 65.0 (48)
M10 x 1.25 N•m (ft.lb.) 31.0 (23) 47.0 (35) 68.0 (50)
M12 x 1.75 N•m (ft.lb.) 53.0 (39) 80.0 (59) 115.0 (85)
M12 x 1.50 N•m (ft.lb.) 56.0 (41) 85.0 (63) 122.0 (90)
M14 x 2.00 N•m (ft.lb.) 83.0 (61) 135.0 (100) 180.0 (133)
M14 x 1.50 N•m (ft.lb.) 87.0 (64) 133.0 (98) 190.0 (140)
M16 x 2.00 N•m (ft.lb.) 127.0 (94) 194.0 (143) 278.0 (205)
M16 x 1.50 N•m (ft.lb.) 132.0 (97) 201.0 (148) 287.0 (212)
M18 x 2.50 N•m (ft.lb.) 179.0 (132) 273.0 (201) 390.0 (288)
M18 x 1.50 N•m (ft.lb.) 189.0 (140) 289.0 (213) 413.0 (305)