BTA INDEXABLE DRILLS TBTA-B FOR SMALL DIAMETERS SINGLE TUBE SYSTEM - OUTER FOUR START THREAD Diameter 0.630 - 1.122 Ø d2 ØD Ø d1 l1 L Dimension Tube Designation D L l1 d1 d2 Part Diameter TBTA-Bx.xxxSE4-14 0.630 - 0.657 2.44 0.79 0.425 0.496 BTSI 014 0.551 TBTA-Bx.xxxSE4-15 0.658 - 0.697 2.44 0.79 0.465 0.535 BTSI 015 0.591 TBTA-Bx.xxxSE4-16 0.697 - 0.744 2.44 0.85 0.492 0.571 BTSI 016 0.630 TBTA-Bx.xxxSE4-17 0.744 - 0.787 2.44 0.85 0.531 0.610 BTSI 017 0.669 TBTA-Bx.xxxSE4-18 0.788 - 0.858 2.66 0.85 0.551 0.630 BTSI 018 0.709 TBTA-Bx.xxxSE4-20 0.859 - 0.949 2.66 0.85 0.630 0.709 BTSI 020 0.787 TBTA-Bx.xxxSE4-22 0.949 - 1.039 2.85 0.85 0.689 0.768 BTSI 022 0.866 TBTA-Bx.xxxSE4-24 1.040 - 1.122 2.85 0.85 0.748 0.827 BTSI 024 0.945 For inserts, see page 616. Operating guidelines on page 714. 617