NPT Bottoming HSS Tap by Bordo Size:1/2" x 14TPI 10-25mm wood spade bits

10-25mm wood spade bits

A thin kerf design delivers faster cuts as well as more cuts per charge when using a cordless tool

Engineered with cobalt infused tungsten carbide to extend cutting life

3 second set

NPT Bottoming HSS Tap by Bordo Size:1/2" x 14TPI 10-25mm wood spade bitsHSS NPT Bottoming Hand and Machine Tap. National Pipe Tapered is a US standard for tapered threads used to join pipes and fittings. ANSI ASME standard B1. 20. 1 covers threads of 60 form with flat crests and roots. The taper on NPT threads allows them to form a seal when torqued as the flanks of the threads compress against each other. However a clearance remains between the crests and roots of the threads, resulting in a leakage around this spiral.