The OSG UNF Spiral Flute Threading Tap is a precision tool built for blind-hole threading in demanding metalworking tasks. Crafted from cobalt-enhanced HSS (HSS-E) and finished with a steam oxide coating, it delivers reliable performance and long tool life in fine-thread applications.

• Size & thread type: No. 2 UNF threading tap designed for fine-thread blind-hole tapping, with an overall length of 64 mm.
• Material & coating: High-speed steel with cobalt (HSS-E) core plus a robust Steam Oxide coating for wear resistance and heat tolerance.
• Flute design: Spiral flutes optimize chip evacuation in blind holes, helping prevent clogging and reducing cutting pressure.
• Cutting geometry: Precision-ground edges and geometry tailored for accurate thread formation and smooth cutting action.
• Durability & reliability: Coated HSS-E construction extends tool life under challenging tapping conditions, delivering consistent results.

This tap directly addresses common tapping challenges: it promotes clean, accurate UNF threads in confined blind-hole spaces, minimizes chip buildup, and maintains performance across multiple operations. The combination of HSS-E material and steam oxide coating provides the durability needed for repeated use on tougher materials, while the spiral flute design streamlines chip flow for steadier feeds and better hole quality. Ideal for precise assemblies in automotive, industrial, and electronics contexts where fine threads and dependable reliability matter most. Use with appropriate cutting fluid and gentle pecking cycles to maximize thread quality and tool life.