Power, Air, and Hand Tools and Accessories

TAP BOTTOMING 1/4-20 NATIONAL COARSE - MACHINE SCREW AND FRACTIONAL PLUG TAPS. PRECISION CUT THREADS ACCURATELY FORMED FOR CONSISTENT EXACT THREADING. HEAT TREATED AND TEMPERED FOR FILE HARD THREADS AND LONGER USEFUL LIFE. DESIGNED FOR HAND CUTTING APPLICATIONS. FOR USE WITH TAP WRENCHES TO CUT INTERNAL THREADS. 75 PERCENT THREAD ENGAGEMENT. BOTTOMING STYLE FOR TAPPING TO BOTTOM OF HOLE-1 TO 1-1/2 THREADS CHAMFERED.