For use with 100 degree flat-head screws to provide reinforced, low-profile attachments. Made of spring steel. Tinnerman has recommended replacing A3135-028-24A, which is cadmium electroplated with A3235-028-193 which is zinc electroplated and is ROHS (hexavalent chrome free)standards.
Pilots HQ responded promptly to my order. They were delivered on time and pricing was reasonable. I would order from them again. Top notch company, very professional.