Special Size Left Hand Reverse Thread Taps

Shop special-size high-speed steel (HSS) left hand reverse thread taps for cutting and restoring uncommon internal inch threads. These specialty taps are designed for machinery repair, industrial maintenance, custom fabrication, and equipment requiring nonstandard left-hand thread diameters or pitches.

Verify the exact nominal diameter, threads per inch (TPI), and left-hand thread specification before ordering, particularly when matching an existing component. For help determining the correct drill size, use our Special Tap and Drill Size Calculator or consult our Tap and Drill Chart.