# MacLean-Fogg

> MacLean-Fogg is a fourth-generation, family-owned American manufacturer founded in 1925 that grew from a single railroad lock nut into a global maker of fasteners, engineered components, plastics, and additive-manufacturing tooling. Headquartered in Mundelein, Illinois, the roughly $1.2 billion-a-year enterprise supplies the automotive, heavy-truck, electric utility, telecom, and industrial markets from dozens of plants across North America, Europe, and Asia. In 2025 it marked its 100th anniversary still owned and led by the MacLean family.

- **Founded:** 1925
- **Headquarters:** Mundelein, Illinois, United States
- **Founders:** John MacLean Sr. (Founder), Jack Fogg (Co-founder / Partner)
- **Team size:** ~2,500 employees (some sources cite 3,500+ across all operations)
- **Products:** Fastener Solutions, Engineered Solutions, Plastic Solutions, Additive Solutions (MacLean Additive), Mallard Manufacturing
- **Notable:** Celebrated 100 years of continuous family ownership in 2025., Grew from a single railroad lock nut into a global enterprise with roughly $1 billion+ in annual sales., Successfully executed four generations of family leadership succession.

## Products & services

- **Fastener Solutions** — Locking fasteners, wheel nuts and specialty fasteners (including Decorex stainless steel wheel nuts, Securex and Whiz-Lock lines) engineered for automotive, heavy truck and industrial applications.
- **Engineered Solutions** — Precision-machined and cold-formed components, linkage and suspension parts, and transmission gear blanks for the automotive and heavy-truck industries via MacLean-Fogg Component Solutions and its Metform and Master Automatic operations.
- **Plastic Solutions** — Injection-molded plastic components and assemblies for industrial and consumer applications.
- **Additive Solutions (MacLean Additive)** — Metal 3D printing, advanced materials, and 3D-printed conformally cooled die-casting tooling for the manufacturing industry.
- **Mallard Manufacturing** — Gravity-flow storage solutions - pallet flow, carton flow, and gravity conveyor systems for warehousing and distribution, acquired in 2024.
- **MacLean Power Systems (affiliated)** — Insulation and protection products, connectors and pole-line fastening systems for electric utility, telecom and civil markets.

## Achievements

- Celebrated 100 years of continuous family ownership in 2025.
- Grew from a single railroad lock nut into a global enterprise with roughly $1 billion+ in annual sales.
- Successfully executed four generations of family leadership succession.
- Opened the M1 machining plant in Savanna, IL to produce gear blanks for 8- and 9-speed light-vehicle transmissions.
- Launched MacLean Additive, entering metal 3D printing and 3D-printed die-casting tooling.
- Expanded into warehousing via the 2024 acquisition of Mallard Manufacturing.

## Latest updates

- **2026-01** — MacLean-Fogg publicized its 100-year anniversary milestone celebrating a century of family ownership, manufacturing excellence and innovation.
- **2025-01** — Marked its official centennial year (founded 1925), entering its second century focused on forming and fastening innovation and modern manufacturing.
- **2024-05** — Acquired Mallard Manufacturing, a maker of gravity-flow warehousing systems, expanding the industrial portfolio.

## Links

- Website: https://macleanfogg.com
- LinkedIn: https://www.linkedin.com/company/maclean-fogg
- Twitter/X: https://twitter.com/macleanfogg
- Facebook: https://facebook.com/macleanfogg/

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Profile page: https://yespress.io/maclean-fogg
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Last updated: 2026-08-04