Designed for professional machinists, the OSG Metric Spiral Point Threading Tap delivers precise, efficient through-hole threading on metric M18 x 2.5 workpieces. Built from HSS-E with cobalt and finished with a steam oxide coating, it stands up to demanding tapping tasks with sustained wear resistance.

• Material: HSS-E (high-speed steel with cobalt) for enhanced hardness and heat resistance during long cuts
• Coating: Steam oxide finish reduces wear and helps extend tool life in tough materials
• Thread size / hole type: M18 x 2.5 through-hole threading tap, designed for internal metric threads in through-holes
• Geometry: Spiral point geometry enables rapid chip evacuation and clean, consistent thread formation
• Brand & precision: OSG manufacturing quality, engineered for reliable performance in industrial tapping operations

When you need dependable, repeatable threads in through-holes, this tap delivers. The cobalt-enriched HSS-E maintains sharpness under heat, while the steam oxide coating minimizes wear. The spiral point pushes chips forward, reducing clogging and post-processing time, and helping extend tool life even in tougher metals. Ideal for production environments where consistent thread quality and throughput matter.