Home / Drilling & Tapping / Tapping / Die Head, Threading Threads, National Acme DS 1-5/8 Die Head, Threading Threads, National Acme DS 1-5/8$149.00 Categories: Attachments & Tooling, Tapping Description Description National Acme ThreadingHead w/ 3/4-16 NF Dies, 1-1/2″ Shank, OAL 10″, 23 Pounds Related products Tapping Head, Procunier #4 w/ Morse Taper #3 Shank $195.00 Read more Collet, 5/8″, 3E, Procunier $10.00 Read more Tapping Head, Procunier #4 w/ Morse Taper #4 Shank $395.00 Read more Tapping Head, Tapmatic 200X Non Reversible , 1/2″ Shank $49.00 Read more