1.71
General Information
1
GENERAL REFERENCE
Standard Bolt Torque Specification
Metric Bolt Torque Specification
Bolt Size
Grade 2
ft-lbs (Nm)
Grade 5
ft-lbs (Nm)
Grade 8
ft-lbs (Nm)
1/4-20 5 (7) 8 (11) 12 (16)
1/4-28 6 (8) 10 (14) 14 (19)
5/16-18 11 (15) 17 (23) 25 (35)
5/16-24 12 (16) 19 (26) 29 (40)
3/8-16 20 (27) 30 (40) 45 (62)
3/8-24 23 (32) 35 (48) 50 (69)
7/16-14 30 (40) 50 (69) 70 (97)
7/16-20 35 (48) 55 (76) 80 (110)
1/2-13 50 (69) 75 (104) 110 (152)
1/2-20 55 (76) 90 (124) 120 (166)
Bolt Size
GRADE
4.6 4.8 8.8/8.9 10.9 12.9
FT-LBS/NM (DRY THREADS)
M3 .3/.5 .5/.7 1/1.3 1.5/2 1.5/2
M4 .8/1.1 1/1.5 2/3 3/4.5 4/5
M5 1.5/2.5 2/3 4.5/6 6.5/9 7.5/10
M6 3/4 4/5.5 7.5/10 11/15 13/18
M8 7/9.5 10/13 18/25 26/35 33/45
M10 14/19 18/25 37/50 55/75 63/85
M12 26/35 33/45 63/85 97/130 110/150
M14 37/50 55/75 103/140 151/205 177/240
M16 59/80 85/115 159/215 232/315 273/370
M18 81/110 118/160 225/305 321/435 376/510
To Next Page
Loading...
Need help?
General
