In business at the same Willoughby location since 1993, D & D Quality Machining produces precision components such as fittings, valve bodies and specialized machined parts for industrial customers. Its 8,000-square-foot air-conditioned facility supports just-in-time and ship-to-stock supply, with warehousing and inventory management built into the service. The company has been ISO 9001-2008 certified since 2002 and specializes in stainless steel machining.
ISO 9001-2008
PFI Precision MachiningSince 1966, woman-owned PFI Precision Machining has made close-tolerance component parts and mechanical assemblies at its shop near Dayton, with a particular focus on small-diameter work and stainless steel. Its highly skilled team brings more than 50 years of custom machining experience to complex projects, including precision parts for aerospace, automotive, medical and industrial customers. PFI operates an ISO 9001:2015-certified facility and also supports customers with just-in-time stocking programs and supply-chain logistics.NEW CARLISLE, OH
Krenz Precision Machining, IncBuilt by a family of German immigrants in Cleveland, Krenz Precision Machining makes precision-machined components for industrial and commercial manufacturers. The Krenz family began its machining businesses in 1967, joined forces under the Krenz name in the 1970s, and continues to own and operate the company today from its 45,000-square-foot North Royalton facility. Krenz is ISO 9001 certified and supports production from a few hundred pieces to several million, with just-in-time and Kanban stocking options for customers.NORTH ROYALTON, OH
Quality CNC Machining, IncSince 1988, Quality CNC Machining has produced intricate, tight-tolerance components through precision Swiss machining and multi-axis CNC mill-turn manufacturing. The Willoughby company serves demanding aerospace, defense, medical and industrial customers with a skilled team, NIST-traceable inspection equipment and a quality system registered to AS9100D and ISO 9001. Its newer Citizen equipment includes two L32 machines installed in 2025.WILLOUGHBY, OH
Precision ProductionPrecision Production manufactures custom-machined components for OEMs and has served those needs for more than 20 years. Based in Strongsville, Ohio, it operates a 38,000-square-foot facility with two shifts and describes its work as meeting tight tolerances and demanding delivery schedules.STRONGSVILLE, OH