Dormer E651 UNC Spiral Flute Tap & Drill Set

The 5/16 UNC spiral flute tap and drill set provides reliable threading for applications requiring this popular intermediate size. Producing a 6.6mm thread diameter with 21mm threading length, this combination tool serves well in equipment assembly, automotive applications and general metalworking where five-sixteenth inch UNC threads are needed. The integrated drill-and-tap design saves considerable time on site by eliminating tool changes. Constructed from high-speed steel with steam tempering, this tool delivers consistent cutting performance throughout its working life.