BSW Bottoming HSS Tap by Bordo Size:5/16" x 18TPI Very good adhesion on all

Very good adhesion on all usual porous building surfaces

Features:- Tungsten carbide measuring faces

5/8˝ Spark Socket

the M18 Jobsite Radio/Charger features a Bluetooth receiver so you can stream rich

Adaptor - 3/8F x 1/4M

BSW Bottoming HSS Tap by Bordo Size:5/16" x 18TPI Very good adhesion on allAbout 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.