
Keystone Screw Corporation is a leading domestic manufacturer of brass and silicon bronze cold-headed fasteners. With more than 50 years of manufacturing fasteners Keystone has built a solid reputation for very competitive pricing, the highest standards of quality, and unequalled customer service. We manufacture our products for various industries with major activity in the electrical, plumbing, and automotive industries with machine screws, plumbing bolts and fasteners, semi-tubular rivets, and hex-head cap screws, as well as being a leading provider of brass and silicon bronze cold-heading wire. We also manufacture fasteners using copper, aluminum and steel, servicing OEMs as well as fastener distributors. With the capability to produce machine screws from a #4 diameter through 1/2 inch, in lengths up to 4", Keystone can satisfy a wide range of requirements. Custom finishes can also [
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