CYLINDRICAL SHANKS 8XD Drilling GOLD TWIST - CYLINDRICAL SHANK Coolant D1 D2 L1 L2 L4 L3 NOTE: We strongly recommend the use of a 1.5:1 or 3:1 Gold•Twist drill of the same diameter to drill a centering starter hole. The use of a centering starter hole improves hole location, accuracy, roundness, straightness and surface finish. 8xD D1 L1 D2 D3 L2 L4 L3 PocketTip Diameter RangeDOCShank Dia.Fig Dia.Ext.Shank LengthOALSizeKey TD0700056S4R01 0.2756 0.2913 2.20 0.500 N/A 2.78 1.77 4.550 7 KTD6.0-D9.9 GOLD TWIST - WELDON SHANK - SHORTER TD0750060S4R01 0.2953 0.3110 2.28 0.500 N/A 2.94 1.77 4.710 7.5 KTD6.0-D9.9 TD0800064S4R01 0.3150 0.3307 2.52 0.500 N/A 3.13 1.77 4.900 8 KTD6.0-D9.9 TD0850068S4R01 0.3346 0.3504 2.68 0.500 N/A 3.32 1.77 5.090 8.5 KTD6.0-D9.9 TD0900072S4R01 0.3543 0.3701 2.83 0.500 N/A 3.46 1.77 5.230 9 KTD6.0-D9.9 D1 D2 D3 TD0950076S4R01 0.3740 0.3898 2.99 0.500 N/A 3.65 1.77 5.420 9.5 KTD6.0-D9.9 TD1000080S6R01 0.3937 0.4094 3.15 0.625 N/A 3.79 1.89 L1 L2 5.680 10 L4 KTD10.0-19.9 TD1050084S6R01 0.4134 0.4291 3.31 0.625 N/A 3.94 1.89 5.830L3 10.5 KTD10.0-19.9 TD1100088S6R01 0.4331 0.4488 3.46 0.625 N/A 4.12 1.89 6.010 11 KTD10.0-19.9 TD1150092S6R01 0.4528 0.4685 3.62 0.625 N/A 4.28 1.89 6.170 11.5 KTD10.0-19.9 TD1200096S6R01 0.4724 0.4882 3.78 0.625 N/A 4.45 1.89 6.340 12 KTD10.0-19.9 TD1250100S6R01 0.4921 0.5079 3.94 0.625 N/A 4.61 1.89 6.500 12.5 KTD10.0-19.9 TD1300104S6R01 0.5118 0.5276 4.09 0.625 N/A 4.79 1.89 6.680 13 KTD10.0-19.9 TD1350108S6R01 0.5315 0.5472 4.25 0.625 N/A 4.94 GOL1D.89TWIST - W6E.8L3D0ON SHAN13K.5- LONGEKRTD10.0-19.9 TD1400112S6R01 0.5512 0.5669 4.41 0.625 N/A 5.20 1.89 7.090 14 KTD10.0-19.9 TD1450116S6R01 0.5709 0.5866 4.57 0.625 N/A 5.36 1.89 7.250 14.5 KTD10.0-19.9 TD1500120S7R01 0.5906 0.6260 4.72 0.750 N/A 5.6D61 1.97 7.630 15 KTD10.0-19D.29 D3 TD1600128S7R01 0.6299 0.6654 5.04 0.750 N/A 6.04 1.97 8.010 16 KTD10.0-19.9 L1 TD1700136S7R01 0.6693 0.7047 5.35 0.750 N/A 6.41 1.97 L2 8.380 17 L4KTD10.0-19.9 TD1800144S1R01 0.7087 0.7441 5.67 1.000 N/A 6.79 2.20 8.L9390 18 KTD10.0-19.9 TD1900152S1R01 0.7480 0.7835 5.98 1.000 N/A 7.17 2.20 9.370 19 KTD10.0-19.9 TD2000160S1R01 0.7874 0.8228 6.30 1.000 N/A 7.54 2.20 9.740 20 KTD20.0-D26.9 TD2100168S1R01 0.8268 0.8622 6.61 1.000 N/A 7.92 2.20 10.120 21 KTD20.0-D26.9 TD2200176S1R01 0.8661 0.9016 6.93 1.000 N/A 8.30 2.20 10.500 22 KTD20.0-D26.9 TD2300184S9R01 0.9055 0.9409 7.24 1.250 N/A 8.68 2.36 11.040 23 KTD20.0-D26.9 TD2400192S9R01 0.9449 0.9803 7.56 1.250 N/A 9.06 2.36 11.420 24 KTD20.0-D26.9 TD2500200S9R01 0.9843 1.0197 7.87 1.250 N/A 9.43 2.36 11.790 25 KTD20.0-D26.9 262