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.understand set screw In order to better serve customers and reflect the core competitiveness of products. https://www.hengkefasteners.com/

　　How to confirm the aperture size depends on the comparison table!