Achieve precision threading with the OSG UNF Spiral Point Threading Tap, engineered for through-hole applications and demanding machining tasks. Crafted from cobalt-enhanced high-speed steel and finished with a durable Steam Oxide coating, this tap delivers dependable performance and long tool life.

• Threading format: UNF spiral point design for efficient chip evacuation and fast, clean thread formation in through-holes.
• Material: HSS‑E (high-speed steel with cobalt) for enhanced hardness, wear resistance, and heat tolerance.
• Coating: Steam Oxide coating to improve wear resistance and lubrication retention during cutting.
• Application: Specifically optimized for through-hole tapping, helping you reach full thread depth with consistency.
• Size: No. 4 x 48, suitable for precise small-pitch UNF threads and compact workpieces.
• Brand technology: Built on OSG’s advanced threading technology to deliver accurate threads and dependable performance across production runs.

This tap supports tighter tolerances and reliable thread quality while extending tool life thanks to its cobalt-enhanced carbide-friendly steel and protective coating. The spiral point design directs chips forward for smoother cutting, reducing clogging in through-holes and minimizing the need for rework. Ideal for shops that demand repeatable results in precision fastening tasks, this tap pairs with compatible HSS taps and machines to elevate throughput and consistency in metalworking projects.