Dormer E651 UNC Spiral Flute Tap & Drill Set

The 5/8 UNC spiral flute tap and drill set represents the largest capacity in this range, designed for heavy-duty threading applications. Creating a substantial 13.5mm thread diameter with 31mm threading length, this robust combination tool handles demanding structural metalwork, heavy machinery assembly and industrial fabrication where five-eighth inch UNC threads are specified. The single-operation design offers significant time savings on projects requiring multiple large-diameter threaded holes. Manufactured from high-speed steel with steam tempering, this substantial t