OSG Threading Tap - BSPT Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole - 3/4 x 14

The OSG BSPT Spiral Flute Threading Tap is a precision tapping tool designed for blind-hole BSPT threads in metalworking. Ideal for machinists and fabricators who demand accurate, durable pipe-thread cuts, it blends a cobalt-enriched HSS-E core with a robust steam oxide coating for exceptional longevity.

• Size & Thread Style: 3/4 in diameter, 14 TPI BSPT for blind-hole tapping in metal components.
• Material: High-speed steel with cobalt (HSS-E) for enhanced hot hardness and wear resistance.
• Coating: Steam oxide finish to improve lubricity, reduce galling, and extend tool life.
• Flute Design: Spiral flute geometry optimized for efficient chip evacuation in blind holes, minimizing clogging and heat buildup.
• Application: Specifically engineered for clean, accurate BSPT thread creation in steel and alloy workpieces with restricted access.
• Precision & Durability: Ground cutting edges and reinforced construction deliver consistent thread quality over extended use.

This tap helps you achieve tight, reliable BSPT threads in hard-to-reach blind-hole applications, reducing rework and improving fit for fittings, adapters, and threaded assemblies. The combination of HSS-E cobalt and the steam oxide coating provides robust performance in demanding machining environments, delivering repeatable results and longer tool life when tapping in steel alloys and similar materials. For shop floors aiming to minimize downtime and maximize threading accuracy, this OSG tap offers a dependable, long-lasting solution.