The OSG BSF Spiral Point Threading Tap is designed for precise through-hole tapping in British Standard Fine (BSF) threads. Built for reliability and long tool life, it’s ideal for shops tackling demanding, high-precision threading tasks.

• Thread Form and Size: BSF spiral-point threading tap in 3/16 in diameter with 32 TPI, optimized for through-hole BSF applications.
• Material: High-Speed Steel with cobalt (HSS-E) for enhanced hardness and heat resistance during demanding cuts.
• Coating: Steam oxide coating provides reduced friction and increased wear resistance for a longer cutting life.
• Chip Evacuation: Spiral-point geometry aggressively pushes chips forward, improving efficiency and reducing chip clog in through-holes.
• Through-Hole Performance: Specifically engineered for through-hole tapping, delivering clean threads with consistent pitch and finish.

This tap is built to deliver consistent, high-quality BSF threads while withstanding the heat and wear of rigorous tapping work. The combination of HSS-E steel and steam-oxide coating supports longer tool life, dependable performance, and smoother operation—helping you complete critical machining tasks with confidence and accuracy.