Many fasteners are available as assemblies with captivated washers, collars, specialized stampings or other components. Engineered assemblies, which combine metal, plastic and other components into one subassembly, are also available. Captured washers improve productivity, eliminate lost, dropped or forgotten washers and simplify purchasing and inventory control. Features One piece screw and washer assembly Able to provide a larger bearing surface area than a one piece cold formed part Able to provide a screw and washer assembly with dissimilar material Benefits Easier and quicker production line assembly over a separate washer and screw Combines two part numbers into one Provides a more consistent torquetension relationship Distributes the load over a large bearing surface reducing potential joint yielding