9 THREAD MILLS – ICONS OVERVIEW General Icons Primary use Possible use Thread Form (THFT) Thread Form, British Standard Pipe Thread Form, Metric Fine Thread Form, Unified Coarse Thread Form, Metric Coarse Thread Form, American National Pipe Taper Thread Form, Unified Fine Basic Standard Group (BSG) Usable Length (ULDR) Dormer Standards 1.5×D 1.5×D Usable Tool Depth to Diameter Ratio 2×D 2×D Usable Tool Depth to Diameter Ratio Material Code (BMC) Flute Geometry (FDC) Hard Material (Solid Carbide) Spiral Flute Geometry Flute Helix Angle (FHA) l10° 10° Helix Angle (Flute) l27° 27° Helix Angle (Flute) Hand (Cutting direction) R Right Hand Rotation / Cutting Coating Shank Aluminium Chromium NitrideAlcrona Pro(special optimized process) DIN 6535 HA Cylindrical ShankDIN 6535HA DIN 6535 HB Weldon Shank Coolant Exit Style (CXSC) Through Tool Coolant – Axial Exit 296