Short Thermal drilling bit

long

Formdrill tool with short parallel sides (L5) behind the leading taper without cutters. This style will create a conical bushing with a collar. Formdrill tool with short parallel sides (L5) behind the leading taper with cutters. This style creates a conical bushing with a flat surface. Formdrill tool with longer parallel sides (L5) behind the leading taper without cutters, that creates a cylindrical bushing with a collar. A formdrill tool with longer parallel sides (L5) behind the leading taper with cutters, that creates a cylindrical bushing with a flat surface. APPLICATION Used in round tubing, square tubing and sheet metal. Used in square tubing and sheet metal. In square tubing and sheet metal. USAGE Thin materials in combination with formtap. The initial tapered bushing guarantees 100% formed threads over the complete length of the Formdrill bushing. Bushing is straight (cylindrical) after tapping. Thicker material with formtap or with cutting taps. The short version Formdrills would produce bushings that are too tapered for tapping. Thicker material with formtap or with cutting taps. The short version Formdrills would produce bushings that are too tapered for tapping.