The OSG BSPT Spiral Point Threading Tap is a precision tool engineered for through-hole BSPT threading, delivering reliable, high-quality threads in demanding machining environments. Crafted from HSS-E (high-speed steel with cobalt) and finished with a durable Steam Oxide coating, it combines toughness, heat resistance, and extended tool life for critical tapping tasks.

• Thread Form: BSPT (British Standard Pipe Taper) spiral point geometry optimized for through-hole tapping and smooth chip evacuation.
• Size: 1/8" diameter with 28 threads per inch (1/8 x 28 BSPT).
• Material: HSS-E (high-speed steel with cobalt) for enhanced wear resistance and temperature tolerance.
• Coating: Steam Oxide coating to reduce wear, improve lubricity, and resist corrosion in tough cutting conditions.
• Design: Spiral point design directs chips forward, minimizing burred edges and reducing tapping torque in through-holes.
• Through-Hole Capability: Specifically suited for through-hole applications, ensuring consistent thread formation in deeper cavities.
• Precision & Longevity: Built on OSG’s advanced threading technology to deliver precise, repeatable threads with extended tool life.

Ideal for manufacturing and repair environments where reliable BSPT threads are essential, this tap supports clean internal threads in pipe fittings, manifolds, and hydraulic components. The combination of HSS-E, Steam Oxide coating, and spiral point geometry provides durable performance under higher cutting temperatures, efficient chip evacuation, and reduced downtime due to wear. For projects demanding consistent thread quality and longer tool life, this tap is a dependable choice that helps maintain tight tolerances and repeatable results across batches.