Equal Lead Thread Cudding (G33)

[gbowne1]

I am programming a part that has this old G Code given to me by a customer.
They sent me this from their old 11M control. I believe that this was programmed in G21 Metric. I need G20 Inch. I just chopped out the section I'm working on at the moment.

N20 G90 G00 X100.0 Y0 S45 M3;
N21 Z200.0;
N22 G33 Z120.0 F5.0;
N23 M19;
N24 G00 X105.0;
N25 Z200.0 M0;
N26 X100.0 M3;
N27 G04 X2.0;
N28 G33 Z120.0 F5.0;

It was supposed to be a macro or part of a part programmed canned cycle.

Anyone want to help me with simplifying this? The program will be run on my 3 axis VMC with 15MA. The thread is a 16tpi thread.

Greg