OSG Threading Tap - UNF Spiral Point HSS-E - Steam Oxide Coated - Through Hole - 7/16 x 20Achieve precise threading for through hole applications with the OSG UNF Spiral Point Threading Tap. Built from cobalt enhanced HSS (HSS E) and finished with a robust steam oxide coating, this tap is designed for durable, high accuracy UNF 7 16 20 threads in demanding machining tasks. Threading Type: UNF Spiral Point design that aids chip evacuation and enables efficient through hole tapping. Material: HSS E (high speed steel with cobalt) for improved