Keystone Threaded Products is an elite manufacturer of precision roll-threaded and machined products. For over 100 years, our work has contributed to projects that strengthen not just our region’s infrastructure and economy, but projects throughout the US. With a unique inventory of machines and a team that has spent decades perfecting their craft, Keystone’s reputation for ACME threading and rolling large diameter bars is second to none. We are proud of what we do, and proud of where we come from.