KM™ Quick Change Internal Threading, Grooving, and Cut-Off 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. KM63TSS25GNER3 KM 63 TS S 25 G N E KM System Feature Bar Bar Bar Gage Insert Holding Insert Quick Size Type Diameter Length Method Location Change 40 = 40mm TS S 10 = 10mm C 50 N E = End D 60 mount 50 = 50mm XMZ 12 = 12mm E 70 63 = 63mm ATC 16 = 16mm F 80 G 90 E 80 = 80mm 4X 20 = 20mm H 100 Steel with 25 = 25mm J 110 100 = 100mm through K 125 32 = 32mm TopGroove™/ coolant L 140 TopThread™ 40 = 40mm M 150 clamping 50 = 50mm N 160 CSMS P 170 E Q 180 LS R 200 S 250 T 300 U 350 Ø V 400 Carbide W 450 with Y 500 through X special Laydown coolant l1(C) A32 WWW.WIDIA.COM