Pre-load and tightening torques for steel fasteners -Fine metric threads

Preload (N) Property class to ISO 898/1 Tightening Torque (Nm)Property Class 
ThreadCoefficient Friction8.810.912.98.810.912.9
M8 x 10.100195002750033000223036
0.125186002620031500253542
0.140181002550030600273845
M10 x 1.250.100305004290051500425971
0.125291104090049100496882
0.140283003980047700527388
M12 x 1.250.10046600655007850076105130
0.12544600625007500088125150
0.140433006100730095135160
M14 x 1.50.1006300088500106000120165200
0.1256050085000102000140195235
0.140585008250099000150210250
M16 x 1.50.10085000120000144000180250300
0.12581500114000137000210295350
0.14079000111000133000225315380
M18 x 1.50.100111000156000187000260365435
0.125106000149000179000305425510
0.140103000145000174000325460550
M20 x 1.50.100140000197000236000360360510
0.125134000189000226000425600720
0.140130000183000220000460640770
M22 x 1.50.100172000242000291000480680810
0.125165000234000279000570800960
0.1401610002260002710006108601050
0M24 x 20.1001970002770003320006108601050
0.12518800026500031800072010001200
0.1401830002570003090078011001300

Note: Due to the fact that fastening applications differ greatly, the above information is for guidance only and is correct to the best of our knowledge. The customer must satisfy themselves with the performance of the fastener and validity of the data. TR Fastenings will not be held responsible for any failure that may occur from the use of this information.