Tools & Gear Taps & Dies HSS Hand and Machine Taps

UNEFUNIFIED NATIONAL EXTRA FINE UNEF is a subset of UNF in which the thread forms feature a greater number of TPI than the standard UNF series. 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. Manufactured from HSS this general purpose tap is designed for use in medium tensile materials and is for hand or general machine use.