The OSG BSF Spiral Point Threading Tap is a precision tool designed for through-hole BSF tapping, built for machinists who demand consistent, high-quality threads and long tool life.

• Thread Type: BSF spiral point design optimized for through-hole tapping to efficiently form threads and evacuate chips.
• Material: HSS-E (high-speed steel with cobalt) for enhanced hardness, wear resistance, and heat tolerance in demanding materials.
• Coating: Steam oxide finish provides durability and corrosion resistance while helping dissipate heat during cutting.
• Size: 9/32" diameter with 26 TPI, specifically suited for standard BSF through-hole applications.
• Chip Evacuation: Spiral point geometry channels chips forward, reducing clogging and improving cutting efficiency in through-holes.
• Application: Ideal for steel and alloy workpieces where clean, accurate BSF threads are required in through-hole assemblies.

With its cobalt-enhanced alloy and robust steam-oxide coating, this tap delivers reliable performance under higher cutting temperatures, providing precise thread forms and predictable results. The combination of materials and geometry minimizes wear, extends tool life, and helps maintain tight tolerances across multiple passages in through-hole machining. This makes the OSG BSF Spiral Point Threading Tap a dependable choice for professional shops, job shops, and maintenance tasks that demand durable, repeatable BSF threading.