HENAF2660 Det 01- Custom Press Stamp to Read: 21-28643-000 103985,
and 2D code and additional engraving/
(Ref Dwg. AB9699)
Blank Size: 3.75″ x .75″ x 1.25″
EDM involves passing a high frequency current from a shaped electrode or wire via a small spark gap to the tool steel blank which is immersed in a dielectric fluid.