BT 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. BT40BER40120M BT 40 B ER 40 120 M Shank Shank Special Feature Toolholder Toolholder Tool Identification Style Taper (optional) Style Size Length Value Size JIS 30 = 30 B = (Taper gage line to 6339 DIN form B coolant front of tool) 40 = 40 feature, tool shipped 50 = 50 to AD specifications(design allows conversion metricxxx = xxx to form B style) inch (blank) = xxx = x.xx (no “B” or “Z”) — tool built to form A/AD coolant style CH = Coolant form AD — M = high pressure Tool built to metric values and has metric HPV = retention thread High performance and balanceable TD = Tunable 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) BB = Bar blank MT = Morse taper adapter SWN = Whistle Notch™ 2° — short — (not to DIN standard) DA = Double-angle collet chuck RC = Rapid Change — T&C tapping adapter chuck TA = Tap chuck adapter DC = Drill chuck SA = Slotting cutter adapter TCRC = Rapid Change — T&C tapping EM = End mill adapter adapter chuck RFX = ROTAFLEX™ boring adapters ER = DIN 6499 single-angle collet chuck TG = Tremendous Grip single-angle SER = DIN 6499 single-angle collet chuck —HC=Hydraulic chuck — Standard Lineshort with internal locknutcollet chuck HCB = Hydraulic chuck — Basic Line SM2C = Shell mill adapter with coolant TGF = Tremendous Grip single-anglecollet chuck — flush face HCSL = Hydraulic chuck — Slim Line and small diameter TT = Shrink Fit thermo toolholder HCSLT = Hydraulic chuck — Slim Line — Trend SMC = Shell mill adapter with coolant TTHT = Shrink Fit thermo toolholder — HCT = Hydraulic chuck — Trend Line SS = Adapter for straight shanks (drills) high torque HPMC = Bearing milling chuck —high performance SSF = Adapter for straight shanks with WD = Whistle Notch with driveflat (drills)WN=Whistle Notch (2° metric; 5° inch) HSK = HSK adapter ST = Screw-on adapters JT = Jacobs taper adapter STRC = Rapid Change — solid tappingadapter chuck KM = KM™ adapter WWW.WIDIA.COM D3