High Quality Content by WIKIPEDIA articles! A parts washer is a piece of equipment used to remove contaminants or debris, such as dirt, grime, carbon, oil, grease, metal chips, cutting fluids, mold release agents, ink, paint, and corrosion from workpieces. Parts washers are one of the last steps in the parts manufacturing process; they are designed to clean, degrease and dry bulk loads of small or large parts in preparation for surface treatment, packaging and distribution. Newly machined, molded and fabricated products are coated in oils, chemicals, burrs, abrasive dust, paint and other residue left over from the fabrication process of metal, plastic and rubber components, and finishing coatings are not effective if they are applied on a dirty surface. Parts cleaners may be as simple as a stand-alone basket immersion washer, or they may be as complex as a five-step deburring, aqueous tumbling, rinsing, drying and paint coating machine. Parts washers are essential in maintenance, repair and remanufacturing operations as well, from cleaning fasteners, nuts, bolts and screws to engine parts and automotive assemblies.