UNF Intermediate HSS Tap by Bordo Size:5/16" X 24TPI High performance 3

High performance 3

Each blank is carefully sourced and offers a smooth

fine adjustment

plastic and chemical

UNF Intermediate HSS Tap by Bordo Size:5/16" X 24TPI High performance 3About this product: HSS UNF Intermediate Hand and Machine Tap. Unified National Fine thread form was introduced in 1948 as an attempt to standardise thread forms in the USA, Canada and the UK. The thread profile of UNF is the same as for metric threads and is described in the JIS B0206 standard. The thread is described by its major diameter and the number of threads per inch of length (TPI). When used on external threads this series has greater