OSG Threading Tap - UNF Spiral Point HSS-E - Steam Oxide Coated - Through Hole - 3/4 x 16Meet the OSG UNF Spiral Point Threading Tapdesigned for machinists and job shops that need precise, durable through hole threads in metalworking tasks. Its 3 4 16 UNF size, HSS E composition, and steam oxide finish work together to deliver reliable performance at higher speeds and with extended tool life. Size and thread form: 3 4 16 UNF through hole threading tap crafted for fine, strong threads in metal Material: HSSE (high speed steel with cobalt)