The OSG BSF Spiral Flute Threading Tap in 1/2 x 16 is built for precise blind-hole threading, delivering clean, accurate threads in demanding steel and alloy workpieces. Designed for machinists and shop technicians who value reliability, this tap combines advanced tooling chemistry with efficient chip evacuation for consistent results.

• Threading standard and size: BSF (British Standard Fine) spiral-flute threading tap, 1/2" diameter with 16 TPI, optimized for blind-hole applications.
• Material: HSS-E (high-speed steel with cobalt) for enhanced hardness and heat resistance during demanding cutting conditions.
• Coating: Steam Oxide coating to improve wear resistance and extend tool life in tough materials.
• Flute design: Spiral flute geometry promotes rapid chip evacuation, reducing clogging and enhancing cutting reliability in blind holes.
• Applications: Ideal for precision tapping in steel and alloy components where access is limited to a blind cavity.
• Compatibility and usage: Suits standard tapping setups with manual or powered tooling; pairing with appropriate cutting fluid supports smoother cuts and longer tool life.

With this tap, you can achieve accurate thread forms from the first pass, minimizing rework and ensuring strong, reliable fastenings in critical assemblies. The combination of HSS-E cobalt and steam-oxide coating provides durability under heat and wear, while the spiral flute design keeps chips moving away from the cutting edge, which is particularly beneficial in blind-hole work. This makes the OSG BSF Spiral Flute Threading Tap a dependable choice for production runs, repairs, and any project where clean, repeatable BSF threads are essential. For best results, use with a tap wrench or compatible machine tap setup and apply light cutting fluid to maintain a steady, controlled cut.