Profile: Saras & Associates specializes in providing precision manufacturing services. We also offer precision cold-heading, electrical hardware, four-slide components, full service machining, injection molding of CPVC & plastics, mechanical fasteners, stamped metal forming, springs, strip and wire formed components. Fastener is a hardware device that mechanically joins or affixes two or more objects together. Mechanical fasteners are those that rely on some mechanical principle (not adhesives) and are semi-permanent (unlike clamps).