The corresponding values for the various screw sizes and strength classes for metric coarse threads can be found in the metric torque table below. The following table shows the tightening torque for metric thread fasteners. In the List metric bolt torque chart you find the metric torque unit in Nm and ft lbs.
With the exception of the F835 Countersunk and Button Head, Alloy Steel Socket Shoul-der and Alloy Steel Low Head Socket Head Cap Screw, torque values for inch series charts up through and including 5/16-in diameter are in inch-pounds; diameters 3/8-in
Calculate required bolt torque. Improvise a torque wrench with a luggage scale. Dimensions of metric threads according ISO 724. ANSI/SO, DIN and JIS bolts. Minimum ultimate tensile and proof loads for metric bolts with coarse or fine threads. Proof loads of metric nuts - …
Alloy Steel Socket Shoulder and Alloy Steel Low Head Socket Head Cap Screw, torque values for inch series charts up through and including 5/16-in diameter are in inch-pounds; diameters 3/8-in and larger are in foot-lbs. Torque values for metric fasteners up through and including M8 are in inch-pounds; diameters M10 and larger are in foot-lbs.
Torque-Tension Relationship for Metric Fasteners ... The torque values can only be achieved if nut (or tapped hole) has a proof load greater than or equal to the bolt's minimum ultimate tensile strength. Clamp loads estimated as 75% of proof load …
These metric bolt torque charts show the ideal tightening torque for class 8.8, 10.9, and 12.9 bolts for both wet and dry tightening. The bolt’s class indicates its material strength, with higher numbers meaning higher tensile and yield strength.
Maximum tightening torques for coarse threaded metric bolts. This chart displays values for lightly oiled threads. The tension is 85% of the proof load.
A bolt/screw torque chart, also known as a torque specification chart, is a reference table that provides recommended torque values for tightening bolts, screws, and fasteners of various sizes and types.
The torque values can only be achieved if nut (or tapped hole) has a proof load greater than or equal to the bolt's minimum ultimate tensile strength. Clamp loads estimated as 75% of proof load for specified bolts. Torque values listed in inch-pounds through and including M8; M10 and over are in ft-pounds .