CHANNELLOCK 8012#4×40 NC Screw Tap

Description

#4 x 40, National course thread, machine screw tap, carbon steel, ideal for Routine maintenance, repair work & for Rethreading where high accuracy & tolerance thread is not critical, straight flutes are ground to provide Rapid chip removal for efficient threading, designed for hand threading work in a variety of materials taps produce a class 2B thread, use drill bit #43 or 5/64inch.