YG-1 TE540 Helical Flute Thread Mill, 7/16-20 Thread, 3-1/2 in OAL, 4 Flutes, 3/8 in Dia Shank

Thread Mills Solid Carbide, 60 Degree, Helical Flute, Tialn Coated For Unified Internal Threads (Ansi B 1.1)

Yg-1 Cutting Tools Te540 7/16-20 Thread Size | Unified | 4 Flute | Solid Carbide | Tialn Coated | Helical Flute Thread Mill