OneMonroe (Monroe Engineering)
ManufacturingMichigan, United States201-500 Employees
OneMonroe, also known as Monroe Engineering, is a manufacturing company headquartered at 2990 Technology Drive, Rochester Hills, Michigan 48309, United States, with 201-500 employees. It is certified to ISO 9001:2015 and AS9100D and offers a broad product line that includes piano hinges, fasteners, casters, rivets, aerospace hardware and fasteners, wiring and cables, quick release pins, handwheels, clamps, toggle clamps, spring plungers, PCBs, pull handles, knobs, and other hardware solutions. The company serves manufacturers, distributors, and catalog houses across industries including aerospace/defense, automotive, automation, biotech, energy/solar/wind, medical, mining, e-mobility, food and beverage, gas and oil, pharmaceutical, ski and hospitality, and transportation. Capabilities include custom manufacturing, contract manufacturing, vendor managed inventory, customer managed inventory, and hardware vending. OneMonroe has grown through acquisitions, including California Caster in 2023 and IntegroEnergy Group and Integro, LLC in 2022, and reported revenue in the range of $100 million to $250 million; it also participated in FABTECH 2025.
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