Irwin Irwin 1788674 High Carbon Steel Bottom Tap

Irwin Irwin 1788674 High Carbon Steel Bottom Tap
5/16"-18NC; Use with F drill bit; 1 to 2 threads chamfered; Ideal for threading close to the bottom of blind holes; High carbon steel; For hand tapping applications; Chip breaking technology cuts chips easier; Tap and size recommended drill bit size are laser etched on each tap; Taps produce a class 2B thread; Carded;