Since its founding in 2002, SPR Machine Inc. has grown from a 2,500-square-foot shop into a 78,000-square-foot precision machining company shaped by a team with decades of hands-on experience. Based in Hamilton, Ohio, it is known for tackling complex research-and-development work and producing customized metal parts for demanding industries. SPR is ITAR compliant and ISO 9001:2015 registered.
ISO 9001:2015
ITAR Compliant
Compliance program
TK Machining SpecialtiesFounded by Troy Kordenbrock, TK Machining Specialties is a Hamilton, Ohio precision machine shop known for taking on intricate geometries and other challenges that many shops avoid. It began with complex 5-axis milling and now helps aerospace, energy, hydraulics and high-performance manufacturing engineers move difficult parts from design into production. An in-house Zeiss Contura CMM supports its documented inspection process, which is calibrated annually to ISO 9001:2015 standards.HAMILTON, OH
Center-Line Machining LLCFamily-owned and operated since 2007, Center-Line Machining produces custom precision-machined components from its Mentor, Ohio shop. Its experienced machinists, engineers, and programmers handle projects from prototype through production, with in-house CNC turning and milling supported by detailed inspection and approved outside services. Center-Line is ITAR compliant, ISO 9001:2015 compliant, and AS9100D compliant.MENTOR, OH
Standby Screw Machine Products CoFounded in Cleveland in 1939, Standby Screw Machine Products makes custom precision-machined parts for customers ranging from automotive manufacturers to equipment makers. Still privately owned and operated by the Marcell family, the company has grown from two screw machines into a 200,000-square-foot, three-facility operation with 300 employees worldwide. Its Berea, Ohio plant and overseas facilities are ISO 9001:2015 registered, supporting both prototype work and high-volume production.BEREA, OH
K&K Precision, IncFounded in 1991 as a small job shop in Lebanon, Ohio, family-owned and -operated K&K Precision now provides custom precision machining and manufacturing from its Mason facility. The company employs more than 55 Ohioans, supports aerospace and defense work through ISO 9001:2015 certification and ITAR registration, and offers 24-hour manufacturing by request. Its planned expansion will increase the plant from 28,000 to 60,000 square feet by 2027.MASON, OH