The OSG BA Spiral Flute Threading Tap is a precision tool designed for 7BA blind-hole threading, built for machinists who demand reliable, repeatable results in tight or hard-to-reach bores.

• Thread Size: 7BA (British Association) for fine-pitch threading in blind holes.
• Flute Design: Spiral flute optimized for efficient chip evacuation in blind-hole applications.
• Material: HSS-E (high-speed steel with cobalt) for enhanced hardness and heat resistance.
• Coating: Steam oxide finish to reduce friction and extend tool life in demanding cuts.
• Application: Ideal for precise threading in thin-walled or tightly access-restricted components.
• Brand: OSG, a trusted name in high-performance threading tools.

This tapping solution delivers consistent, high-quality threads while maintaining edge sharpness under higher cutting temperatures. The cobalt-enhanced HSS and steam oxide coating work together to improve durability and heat resistance, helping you achieve clean threads in challenging blind-hole workpieces. Use with appropriate lubrication and a compatible tap wrench to maximize performance in precision assemblies, instrument housings, or aerospace-grade components that require reliable 7BA threads.