OSG's Metric A-Spiral Flute threading tap with a Weldon HB powder-metal shank is engineered for precision threading in metric blind holes. Designed for professional workshops and production environments, it delivers reliable, repeatable results in demanding tapping tasks.

• Size and pitch: M16 x 2 (2.0 mm pitch) with a 110 mm overall length and 16 mm threading length for controlled depth in blind-hole applications.
• Flute style: A-spi ral (spiral) flute geometry to efficiently evacuate chips from blind holes and reduce clogging during tapping.
• Material: Powder-metal substrate providing enhanced torsional strength and wear resistance for longer tool life.
• Coating: TiCN (Titanium Carbo-Nitride) coating to form a harder surface and reduce friction, extending tool life in demanding materials.
• Shank: HB Weldon shank for stable, reliable engagement in standard tapping holders and machines.
• Application: Specifically designed for metric blind-hole tapping with DIN 371/1835 compatibility and right-hand threading.
• Dimensions and fit: Shank diameter 16 mm, square 12, three flutes, reach 56 mm, optimized for precise alignment and smooth entry in tight cavities.

In practice, this combination translates to smoother starts, cleaner threads, and fewer interruptions on production lines. The TiCN coating lowers friction during cutting, helping maintain consistent thread quality and extend tool life, while the spiral flute design facilitates chip removal in deep or recessed holes. The reinforced Weldon shank and powder-metal construction offer dependable performance under high-demand tapping conditions, making it a solid choice for metric blind-hole work that requires accuracy and endurance.