The OSG UNC Spiral Point Threading Tap No. 12 x 24 is a high-performance through-hole tapping tool designed for professionals who demand precise, durable UNC threads. Crafted from cobalt-enhanced HSS-E and finished with a Steam Oxide coating, it delivers reliable cutting performance in demanding metalworking tasks.

• Size and thread form: No. 12 UNC spiral-point threading tap designed for through-hole applications.
• Material and coating: HSS‑E (high-speed steel with cobalt) with a Steam Oxide coating for improved hardness and wear resistance.
• Chip evacuation: Spiral‑point geometry that pushes chips ahead of the flute, promoting efficient tapping in through-holes.
• Durability and precision: Engineered to deliver consistently accurate threads and extended tool life under demanding use.
• Application fit: Specifically optimized for through-hole tapping with reliable performance in common machinable metals.
• Technology support: Backed by OSG’s advanced threading technology for dependable results in critical jobs.

Whether you’re fabricating new assemblies, repairing threads, or maintaining production lines, this tap helps you achieve clean, correctly formed UNC threads with minimal rework. The cobalt-enhanced HSS-E material handles higher cutting temperatures, while the Steam Oxide finish adds wear resistance and lubricity for smoother cuts. The spiral-point design enhances chip control in through-holes, enabling steady feeds and reduced risk of tap breakage in deeper holes. No. 12 x 24 threads produced are strong, repeatable, and compatible with standard fasteners, supporting reliable performance in essential components.