OSG Threading Tap - BSF Spiral Flute HSS-E - Steam Oxide Coated - Blind Hole - 7/8 x 11Meet the OSG BSF Spiral Flute Threading Tap, engineered for precise blind hole threading in metalworking. Designed for professionals who demand consistent, accurate British Standard Fine threads, this HSS E tap with steam oxide coating delivers dependable performance from first cut to final thread. Flute Design: Spiral flute geometry for efficient chip evacuation in blind holes, reducing tool stoppages and breakages. Material: HSS E (high speed steel