The OSG BSF Spiral Point Threading Tap in 7/16 x 18 is a precision through-hole tapping tool built for professional machining. Crafted with HSS-E cobalt and a Steam Oxide finish, it delivers durable performance and reliable thread quality in demanding metalworking tasks.

• Thread Type: BSF Spiral Point design that drives chips forward for clean, efficient through-hole tapping and reduced risk of clogging.
• Size & Pitch: 7/16" diameter with 18 threads per inch (7/16-18 BSF) for precise British Standard Fine threading.
• Material & Hardness: High-speed steel with cobalt (HSS-E) for improved wear resistance and heat tolerance during extended cutting.
• Coating: Steam Oxide coating to enhance wear resistance, reduce friction, and extend tool life in tough tapping applications.
• Chip Evacuation: Spiral point geometry optimizes chip flow, enhancing threading accuracy and surface finish in through holes.
• Applications: Specifically designed for through-hole tapping, fulfilling the needs of precision metalworking, automotive, and general engineering tasks.

With its combination of cobalt-enhanced steel and a durable steam-oxide finish, this tap delivers long life and consistent thread formation under heat and wear. The spiral point design minimizes chip buildup and cross-threading, helping you achieve accurate 7/16-18 BSF threads quickly and reliably. Built for professionals who demand repeatable results in through-hole projects, this tap supports efficient workflows and high-quality outcomes across a range of metals and applications.