Straight 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. SS120TG50100M SS 120 TG 50 100 M Shank Shank Taper Toolholder Toolholder Tool Identification Style Size Style Size Length Value 120 = 12mm DA = Double-angle collet chuck (Flange face to 125 = 12,5mm DP = Double pin, floating holder front of tool) 160 = 16mm ER = DIN 6499 single-angle collet chuck metricxxx = xxx 190 = 19mm FC = Fully floating holder inch 200 = 20mm SA = Slotting cutter adapter xxx = x.xx 250 = 25mm STL = DAL — tapping adapter, solid 038 = 3/8" TCJ = DAJ — tapping adapter,tension and compression 050 = 1/2" TCK = DAK — tapping adapter, 062 = 5/8" tension and compression 075 = 3/4" TCL = DAL — tapping adapter, tension and compression 100 = 1" TCTG = TG — tapping adapter, 125 = 1-1/4" tension and compression 150 = 1-1/2" TG = Tremendous Grip single-angle collet chuck 175 = 1-3/4" TOJ = DAJ — tapping adapter, 200 = 2" tension only M = Tool built to metric values TOK = DAK — tapping adapter,tension only (blank) = Tool built to inch values TOL = DAL — tapping adapter, tension only TT = Shrink Fit thermo toolholder TG = Collet series xx (50), xxx (100) EM = I.D. size: metric — xx = xx, (20); inch — xxx = x.xx, (075) SM = O.D. size: metric — xx = xx, (20); inch — xxx = x.xx, (075) WWW.WIDIA.COM H3