General description Dormer E500 straight flute taps are designed for versatility, allowing for hand use or machine application. They are suitable for tapping through or blind holes in various materials. For blind holes, it is recommended to use straight flute taps in sets, which include a taper (first tap), second (intermediate tap), and bottoming (third or plug tap). Technical specifications Size: 5.0mm x 0.8 Material: HSS (High Speed Steel) Tolerance: Class 2 for 6H Fit Surface treatment: Bright Flute Geometry: Straight Flutes (ISO529) Chamfer: No 1, 2, and 3; Serial No 4 and 5