Sterling Production Machining (SPM) is an ISO 9001/2008 customer-driven, American manufacturing company, specializing in the manufacturing of sub-assembly parts and fixtures for the automotive and heavy equipment industry. We are dedicated to serving the automotive, medical, heavy machining, and military industries. SPM specializes in building in-house fixtures and running low and multi-year high-volume production. SPM is also fully capable in meeting your emergency production needs.