BSW Bottoming HSS Tap by Bordo Size:1/2" x 12TPI Contains genuine tung nut oil

Contains genuine tung nut oil

It provides a clean and exact cut

such as the splinter guard and extraction system perfectly matched to the machine

Process starts by heating cycle with high temperature quartz heating elements then gradually vacuum press cycle to finish foiling with negative suction pressure

BSW Bottoming HSS Tap by Bordo Size:1/2" x 12TPI Contains genuine tung nut oilAbout this product: HSS BSW Bottoming Hand and Machine Tap. British Standard Whitworth has a thread angle of 55 degrees as opposed to 60 degrees in Metric and Unified threads. This thread form was developed by Sir Joseph Whitworth in 1841. The thread form has rounded roots and crests and is specified in BS84: 1956. Bottoming Taps have a lead of two threads and are used to ensure minimum thread run out when tapping to the bottom of a blind hole.