UNC UNIFIED NATIONAL COARSE DIE NUT MAJOR DIAMETER X THREADS PER INCH:1/4 X 20 Chamfering

Chamfering

engineered to pull metal chips up and out of the hole to prevent tap breakage

Reduces debris contamination – protects fuel & brake systems

Although the surface of copper and brass is darkened

SPECIFICATIONS

UNC UNIFIED NATIONAL COARSE DIE NUT MAJOR DIAMETER X THREADS PER INCH:1/4 X 20 ChamferingBest Practices for Use Lubricate: Always use a quality cutting or threading fluid liberally on the thread and tool before starting. Alignment: Ensure the die is perfectly straight when catching the first thread to avoid cross threading. Action: Rotate forward to cut chase, and then reverse the die slightly every full turn forward to clear away shaved metal chips and protect the cutting edges. The Technical Breakdown for 1 4 x 20 UNC 1 4" (Nominal