Series Specs Finishes: Brass, stainless steel and steel materials are polished in a range of finishes to meet strict ANSI and BHMA standards. Antimicrobial: Protection Hager offers an option of antimicrobial protection for the full line of stainless steel architectural grade butt hinges to prevent growth of bacteria and fungi. Operation: Hager hinges are designed to meet a number of applications. Frequency of use (low, medium or high) and door/frame types combined with end use, environmental considerations and building code compliance determine the appropriate hinge application.