roll forming tap

machine tap 1.Thread Type: M(Metric) 2.Work Material: Aluminum, Zinc, Cast Aluminum, Cast Zinc, Copper, magnesium. etc. 3.Standard sizes are available from stock. We can also manufacture as per customers' request. 4.Platform:CNC machine. lathe. automatic machine. etc. Feature: 1.Chipless tapping 2.Stronger threads 3.Better thread gaging 4.Longer tap life 5.Higher accuracy and precision Formed threads are created by material displacement. The cold forming process redirects material grain orientation, resulting in thread flanks with higher surface tensile, yield, and shear strengths. Thread surface finish is also good, improving resistance to corrosion and abrasion. Thread flank quality is uniform and size is very consistent. Most suppliers of form taps offer guideline recommendations for hole size for various threads and materials. But because the flow of a given work material cannot always be predicted,XYC Tap & Die recommends testing various drill sizes if the percent of thread required is critical.XYC also recommends chamfering or countersinking the hole before tapping, because some work materials may extrude above the top of the hole during forming.