Coleys Inc. grew from a Vermilion garage shop founded in 1968 into a third-generation, family-run CNC manufacturer making tight-tolerance components for demanding industries. Its Ohio facility operates around the clock with more than 50 high-capacity machining, turning and sawing centers, along with in-house prototyping and inspection. Coleys also holds ISO 9001:2015 certification and acquired Automatic Parts in 2009 to add Swiss and screw machining.
ISO 9001:2015
certification
FedBiz SAM Certified
registration
Triangle Machine ProductsFamily-owned and operated for four generations, Triangle Machine Products has remained in business since 1957, building its reputation on integrity, common sense, and hard work. From its 47,000-square-foot Cleveland-area facility, the company makes precision CNC-turned components for OEMs and other manufacturers, supporting both prototype work and high-volume production. Triangle employs 40 people and holds ISO 9001:2015 and IATF 16949:2016 certifications.CLEVELAND, OH
Proficient Machining CoEstablished in 1973, family-owned Proficient Machining Co. makes precision CNC-machined and screw-machine parts for customers across industries including aerospace, medical, nuclear, and automotive. The Mentor, Ohio manufacturer combines a long-tenured workforce—with many employees staying 20 to 30 years—with capabilities ranging from one-piece prototypes to high-volume production. Its quality system is ISO 9001:2015 certified.MENTOR, OH
Kernell’s Automatic MachiningFamily-owned and operated since 1969, Kernell’s Automatic Machining makes automatic screw-machined and Swiss CNC components in its 26,000-square-foot facility in North Central Ohio. The company is especially known for cable fittings and for solving difficult, high-volume component jobs with in-house tooling, custom inspection equipment, and a core team reporting 302 years of combined experience. Kernell’s maintains ISO 9001:2015 certification and serves customers across the United States and abroad.BERLIN HEIGHTS, OH
G.L. Heller Co. IncG.L. Heller Co. is a family-owned Whitehouse, Ohio machine shop that has produced precision CNC-turned and milled parts and waterjet-cut components since 1972. Started by Gary and Jean Heller in their home garage, the company remains owned by the Heller family and now operates from its original location in a 38,000-square-foot shop. Its production work is backed by ISO 9001:2015 certification and a climate-controlled inspection lab.WHITEHOUSE, OH