The OSG NPT Spiral Point Threading Tap is a high-performance tool designed for precise internal NPT threading in through-hole workpieces. Built for machinists and fabricators who demand reliability and efficiency, it delivers durable, accurate threads with extended tool life.

• Material: HSS-E (high-speed steel with cobalt) for superior hardness and heat resistance.
• Coating: Steam Oxide finish that enhances wear resistance and reduces friction during cutting.
• Threading design: Spiral point geometry promotes fast chip evacuation in through-hole applications.
• Thread size: 3/4-14 NPT (3/4 x 14) for standard pipe-thread connections.
• Application: Through-hole tapping, optimized to cut accurate internal NPT threads in pre-drilled holes.
• Precision: Engineered by OSG to deliver consistent thread pitch and a smooth, clean finish.

This tap enables quicker machining cycles thanks to its efficient chip control and the durability of HSS-E cobalt. The steam oxide coating extends tool life under typical shop conditions, reducing downtime and rework. With precise 3/4-14 NPT threads, you can achieve dependable fittings and sealing when used with proper sealing practices, making it a reliable choice for hydraulic, pneumatic, and general pipe-threading tasks.