Founded in 1925, today MacLean-Fogg is a global enterprise with 32 global manufacturing facilities, annual sales in excess of $900 million, and a worldwide workforce of more than 3,000 people. MacLean-Fogg is a privately held enterprise headquartered in Mundelein, IL USA.

MacLean-Fogg is comprised of two primary businesses, MacLean-Fogg Component Solutions and MacLean Power Systems. MacLean-Fogg is lead by President and CEO Barry MacLean.

MacLean Power Systems (MPS) is a leading manufacturer of products for electric utility, telecommunications and civil markets. MPS products include: automatic splices and bolted connectors, silicone rubber non-ceramic insulators for transmission, distribution and substation applications, hollow core insulators, surge arresters, guy and foundation anchors, pole line hardware, aluminum and ductile clamps, fiberglass brackets and guy strains, steel fabrications, and grounding equipment. MPS has manufacturing operations in the USA, Canada, China, Australia, Brazil, France, Thailand and Malaysia and serves customers around the world. MPS is headquartered in York, SC.

MacLean-Fogg Component Solutions (MFCS) is a leading manufacturer of fastener components, engineered components and linkage and suspension components for automotive, heavy truck, aerospace and other diverse industries. Core MFCS products include locknuts, decorative automotive wheel fasteners, high temperature fasteners, aerospace fasteners, Hatebur process hot forgings, cold formed products, machined products, functional engineered plastic and suspension products. MFCS is comprised of multiple production locations in the USA, Germany and France with customer support locations in Mexico, Japan, China, India and Korea. MFCS is headquartered in Mundelein, IL.