More complete hole diameter comparison table of screw tapping drill, high-definition chart, pay close attention to t
Standard metric nut tapping needs to drill a hole smaller than the thread diameter to tap. The size of this hole is from the thread minor diameter to the thread middle diameter.pass wheel nut It can be seen from the present situation that the market prospect is relatively broad, which is conducive to our reference and investment. https://www.hengkefasteners.com/
How to confirm the aperture size depends on the comparison table!