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Cross-reference the bolt size and grade to find the recommended torque value. The chart provides torque specifications in inch-pounds (in.-lbs.) or foot-pounds (ft-lb).
Torque specifications, especially for critical joints, should be determined under actual assembly conditions due to the many variables involved which are difficult to predict and do affect the torque …
The torque figures for a finely-threaded fastener as compared to a coarsely-threaded fastener of the same diameter may be slightly higher but hardly worth mentioning.
Torque values for various grades and diameters of fasteners.
In the following table of torque specifications, you will find all the necessary torque values in Newton-meters (Nm) for common screw thread sizes and strength classes.
These estimated torque values are derived from the standard torque formula Torque = KDF utilizing a standard 'free-spinning' nut (non-locknut) with a proof strength equal to or greater than the tensile …
A lubricated fastener must have the torque values reduced 25 – 30% from the above ratings. Keep in mind that this is only an estimated value. It may provide satisfactory performance. Every …
Button Head Cap Screws Inch-Button Head Metric-Button Head NOTE: This specification is for Holo-Krome® alloy steel fasteners with thermal black finish and light oil.
The following suggested tightening torques provide an excellent starting point for determining torque requirements. Remember, you may need to vary these numbers somewhat based on the …
Bolt Torque Chart showing suggested torque values and corresponding bolt clamping forces for various sizes and specifications of fasteners.
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