Deltana is an architectural hardware manufacturer with a proven record for exceptional service and quality. Deltana inventories America's largest selection of architectural and door hardware in over nine fine finishes made from solid brass, zinc, aluminum, steel, and stainless steel. With an array of fine finishes, find hinges, bolts, bumpers and stops, ball catch, roller latches, door accessories, and home accessories that compliment your home's decor. The Deltana bolts with concealed screws are a contemporary alternative to improve security and appearance.