QC30 Shank Tools Catalog Numbering System How Do Catalog Numbers Work? Each character in our catalog number signifies a specific trait of that product. Use the following key columns and corresponding images to easily identify which attributes apply. QC30TG50100M QC 30 TG 50 100 M Shank Shank Toolholder Toolholder Tool Tool Style Taper Style Size Length Length Size 30 = 30 DA = Double-angle collet chuck (Taper gage 40 = 40 EM = End mill adapter line to fromof tool) 50 = 50 MS = Morse taper adapter inch SA = Slotting cutter adapter xxx = x.xx SM = Shell mill adapter TA = Tap chuck adapter TG = Tremendous Grip single-angle collet chuck TG = M = Tool built to metric Collet series xx (50), xxx (100) values and has metric retention thread EM = I.D. size: metric — xx = xx, (20);inch — xxx = x.xx, (075) (blank) = Tool built to inchvalues and has inchretention thread SM = O.D. size: metric — xx = xx, (20); inch — xxx = x.xx, (075) WWW.WIDIA.COM G3