Tightening Torque Values - Metric - Self Locking Nuts & Industrial Nuts

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Tightening Torque Values - Metric

Technical Information

Values calculated using industry accepted formula T = KDP where T = Torque, K = torque coefficient
D = nominal diameter, P = bolt clamp load. K Factor - Thread Friction 0.125 +/- 20% Under head Friction 0.125 - 0.16

Please note that due to the nature and variability of torque tightening, particularly frictional scatter, all figures shown are offered
as a basis for conducting initial tests only. Users must undertake experiments using the specific equipment, mating parts,
lubricants and any other components of the joint to determine the correct torque settings which meet their specific need and achieve an adequate joint clamp load. Crest Industrial Ltd accepts no responsibility for the accuracy of the figures given or the resultant clamp loads achieved when using this information which is intended for general guidance only.

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