BTA INDEXABLE DRILL TBTA-A FOR SMALL DIAMETERS SINGLE TUBE SYSTEM - OUTER FOUR START THREAD Diameter 1.142 - 1.496 Ø d2 Ø d1 ØD l1 L Dimension Tube Designation D L l1 d1 d2 Part Diameter TBTA-Ax.xxxSE4-26 1.142 - 1.220 2.72 0.96 0.827 0.925 BTSI 026 1.024 TBTA-Ax.xxxSE4-28 1.221 - 1.311 2.72 0.96 0.906 1.004 BTSI 028 1.102 TBTA-Ax.xxxSE4-30 1.311 - 1.425 2.72 0.96 1.004 1.102 BTSI 030 1.181 TBTA-Ax.xxxSE4-33 1.426 - 1.496 2.95 1.20 1.063 1.181 BTSI 033 1.299 For inserts, see page 612. Operating guidelines on page 714. 613