Union Butterfield 1580(UNC) High-Speed Steel Thread Forming Flute Tap, Uncoated (Bright) Finish, Round Shank With Square End,...

The Union Butterfield 1580(UNC)/1580(UNF) uncoated, high-speed steel thread forming tap has a round shank with a square end and is used for cold-forming right-hand threads in ductile materials such as aluminum, brass, bronze, low-carbon steel, and leaded steel. It is available in two different ANSI thread specification standards: UNC (Unified Coarse) and UNF (Unified Fine). It is suitable for...

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Union Butterfield 1580(UNC) High-Speed Steel Thread Forming Flute Tap, Uncoated (Bright) Finish, Round Shank With Square End,...