Keystone Powdered Metal Company manufactures bearings, gear assemblies and flanges. Its products by name include: camshaft sprockets, park gear, inner race, mechanical diode, park sprag guide, bearings, spur gear, driven sprocket, crankshaft sprocket, carrier, forged helical pinion, coast clutch hub/input assembly, mechanical diode and outer race. It s press tonnages is 3-1500 ton and Keystone has a full spectrum of P/M products and material systems. It is a privately owned company that has four manufacturing locations. It manufacturing plants are located in Cherryville, N.C., Columbus, Ohio,Lewis Run, Pa. and St. Marys, Pa. Its quality certifications include: QS-9000, ISO-9002, ISO-14001, ANSI/ISO/ASQCQ-9002 and Ford Q-1. Keystone was founded in 1927.