Torque Tightening Metric Screw Threaded Fasteners
|Publication Date:||15 November 1982|
This AIR supplies information on recommended assembly torque limits for tension type nuts and bolts of the materials and plating combinations given in Table I.
In calculating the torque values in Table II, the following assumptions have been made:
(a) Threads and bearing surfaces are lubricated with MIL-L-7808 aircraft engine oil.
(b) The torque is applied to the nut. If torque is to be applied to the bolt head; the induced load may be reduced by friction on the shank.
(c) The tensile preload stress is 440MPa.