Reducing the size of a rod you want to thread with a die makes it easier to start the die, but the real secret is to add a 30° chamfer to the end of the rod.
Die Blank Size is the Major Diameter less 10% of the Pitch. This is about the same as common bolts.
End Mill Set, 20-pieces 2 & 4 Flute, TiN coated HSS, Premium
Tool Bit, 5/16" x 2-1/2", M2 HSS
