Home / Drilling & Tapping / Tapping / Tap, Pipe, 3/8″ 18 NPT HS, Wells Tap, Pipe, 3/8″ 18 NPT HS, Wells$19.00 Category: Tapping Description Description $19 Each Related products Die Head, Threading Threads, National Acme DS 1-5/8 $149.00 Read more Tapping Head, Procunier #3 Morse Taper #3 Shank, Fits Clausing 20″ Drill $249.00 Read more Collet Set, Procunier #2, #6, 8, 10, 1/4″, 5/16, 3/8, 1/2 $49.00 Read more Collet, 1/2″, 3E, Procunier $10.00 Read more