Hand tap - special thread 8-40 tap size, Bottoming style Bottoming taps (1 to 2 threads); used for threading close to the bottom of a blind hole General purpose taps can be used by hand or under power, in through (open both ends) or blind holes (closed one end) Quantity -1 per pack

Alfa Tools hand taps - special thread. Super high-speed steel ground thread, right hand. Bottoming taps (1 to 2 threads) used for threading close to the bottom of a Blind hole. General purpose taps can be used by hand or under power, in through (open both ends) or Blind holes (closed one end). standard H limits provide adequate class of fit.