Meet the OSG BA Spiral Point Threading Tap—built for precise BA thread production in through-hole applications. Designed for machinists and technicians working on small, high-precision assemblies, it delivers clean threads with dependable longevity.

• Thread Size / Type: 13BA through-hole British Association thread, ideal for tapping compact components.
• Material: HSS‑E (high‑speed steel with cobalt) for improved hardness, heat resistance, and long tool life.
• Coating: Steam oxide coating reduces friction and provides added corrosion resistance, aiding smoother cuts and easier cleaning.
• Geometry: Spiral point design facilitates positive chip evacuation, helping to prevent chip packing in through-holes.
• Application: Specifically engineered for through-hole tapping, delivering accurate threads with stable performance.
• Compatibility: Suitable for use with standard tapping operations on CNC mills and drill presses.

This tap combines durable cobalt-enhanced steel with a lubricious coating to deliver consistent thread quality, even under higher temperatures. The spiral point geometry pushes chips ahead, reducing the risk of snagging and cross-threading in through-hole work. Ideal for precision instrument housings, small-fastener assemblies, and electronics enclosures where BA thread accuracy matters. For best results, maintain proper lubrication, use suitable drill pilot sizes for 13BA, and avoid excessive cutting speeds to maximize tool life and thread precision.