We are thread rolling an alum extrusion 2-56 (kinda gummy characteristics) 6063 maybe not real sure.
Question 1: Does any one have any info on how the threads are supposed to look?
The recomended size is .078-.080. we went with .0765 roughly. the threads still look like they have 2 crests, top and bottom.
Question 2: Is this typical for thread roller taps?
Any info on this matter would be greatly appreciated. nfs