Profile: Sheffield Mfg. offers precision machining, sheet metal and welding services to the aerospace and military aircrafts. Our products include sheet metals, machining and welding assemblies. Our machining products that include magnetic clutch, hydraulic vavle body, electronics enclosure. Our welding assemblies that include flap assembly, F4 missile door assembly and aluminum weld assembly. We manufacture products in the material of aluminum, stainless steel, nylon, titanium, magnesium, brass, copper, phenalic and inconel. We have ISO 9001:2000 certification.