IPC DR 570 : A

1.0 SCOPE
     1.1 Classification
     2.1 IPC
3.0 REQUIREMENTS
     3.1 Terms and Definitions
     3.2 Specifications
          3.2.1 Drill Diameter Tolerance
          3.2.2 Drill Body Length Tolerance
          3.2.3 Shank Diameter
          3.2.4 Overall Length Tolerance
          3.2.5 Back Taper
          3.2.6 Web Taper
          3.2.7 Land Width Angle
          3.2.8 Shoulder Angle
          3.2.9 Lip Height Tolerance
          3.2.10 Helix Angle
          3.2.11 Point Angle
          3.2.12 Primary Relief Angle
          3.2.13 Secondary Relief Angle
          3.2.14 Fillet Radius
          3.2.15 Finishes
          3.2.16 Layback Tolerance
          3.2.17 Hook Tolerance
          3.2.18 Open Point Tolerance
          3.2.19 Overlap Tolerance
          3.2.20 Primary Flare Tolerance
          3.2.21 Primary Taper Tolerance
          3.2.22 Chamfer Angle
          3.2.23 Body to Shank Concentricity
          3.2.24 Point Concentricity
Figures
Figure 1 Type I drill features
Figure 2 Type II drill features