C.A. Briggs Company, 632 Davisville Rd, Willow Grove, PA 19090, US

For more than 50 years, Keystone Screw Corp. has been a domestic manufacturer of brass and silicon bronze cold-headed fasteners. Located in Willow Grove, Pa., the company is one of the leading manufacturers of brass and bronze fasteners in the United States. Keystone Screw Corp. serves a vast market unit that includes electrical, plumbing and automotive industries. The company offers a broad range of products, such as machine screws, plumbing bolts and fasteners, semi-tubular rivets, hex-head cap screws, brass and silicon bronze cold-heading wire. Keystone Screw Corp. also manufactures fasteners using copper, aluminum and steel, servicing original equipment manufacturers (OEM's) as well as fastener distributors.