OSG BSP Spiral Flute Threading Tap in HSS-E with Steam Oxide coating delivers precise BSP threads for blind-hole applications, built for professionals who demand durability and consistent results in metalworking.

• Brand & type: OSG BSP Spiral Flute Threading Tap designed specifically for blind-hole BSP thread creation.
• Material & coating: High-speed steel with cobalt (HSS-E) and a durable Steam Oxide coating for enhanced hardness, heat resistance, and extended tool life.
• Flute design: Spiral flute optimizes chip evacuation in blind holes, minimizing clogging and rework.
• Size & thread: 3/8" diameter with 19 threads per inch (3/8 x 19 BSP) for standard BSP threading.
• Application: Ideal for tapping blind holes in steel, cast iron, and tougher alloys where clean, accurate BSP threads are essential.
• Durability & reliability: Coating reduces friction and wear, helping maintain thread integrity across multiple taps and demanding cycles.

This tap empowers machinists, job shops, and serious DIY enthusiasts to produce high-quality BSP threads with confidence. The combination of HSS-E cobalt and Steam Oxide coating supports tougher cutting conditions, improves heat resistance, and delivers dependable performance in critical tapping tasks. Whether refurbishing leak-tight fittings or assembling precision components, this tapping tool helps you achieve accurate threads and longer tool life with fewer reworks.