9/16-12 UNC H3 4Fx 2.5P ExoTap A-Tap TiCN, OSG 1650503708
9/16-12 UNC H3 3FX 2.5P EXOTap A-Tap TiCN The EXOTap A-Tap is an all-purpose Tap series designed to simplify tool management and to excel in a wide variety of materials and applications. The EXOTap A-Tap is made from powdered metal HSS and has OSG's patented V coating to achieve excellent wear resistance. The spiral flute series has adopted a variable helix flute design, which encourages stable chip evacuation and reduces cutting forces. The spiral point series has unique geometry that enables greater chip control that can help produce tightly compacted chips for easy ejection from the hole.