Made of shock-resistant and heat treated S2 steel for maximum strength and hardnessIdeal for maintenance and repair workManufactured in United States
1/4"; x 20, National course thread, fractional 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 #37 or 3/16";.
Brand: American Tool, Model: 8120, Size: Pack of 1