Bordo NPT Bottoming Chrome Alloy Hand Tap - 4252 Diameter (inch):1/2 ◆Heavy-duty cast iron body

◆Heavy-duty cast iron body

◆Cut 3 PLUS: steel

● Spiral point

For use on aluminium

Bordo NPT Bottoming Chrome Alloy Hand Tap - 4252 Diameter (inch):1/2 ◆Heavy-duty cast iron bodyChrome Alloy NPT Bottoming Hand Tap ANSI ASME standard B1. 20. 1 covers threads of 60 form with flat crests and roots However a clearance remains between the crests and roots of the threads, resulting in a leakage around this spiral Used as thread chasers to clean an existing thread. The taper on NPT threads allows them to form a seal when torqued as the flanks of the threads compress against each other. Chrome alloy taps are not suitable for creating