Welcome to MacLean-Fogg Component Solutions Chesterfield Township (MacLean Maynard)

MFCS Chesterfield Township, also known as MacLean-Maynard, is the recognized global leader in the manufacture of bolts and studs for high temperature and high vibration applications.  Maynard Manufacturing Company was founded in 1947.  Our Improved Lockthread and Self-Aligning Lockthread are recognized industry leading products used by OEMs and Suppliers around the globe.  Maynard joined the MacLean-Fogg family of companies in 1997.

Please click around to learn more about us.  Feel free to contact us to discuss how our fasteners can improve your next high temperature application.

You can download our Divisional Information Sheet by clicking here.

For information on the thread types, sizes, materials, and processes used to manufacture our fasteners, please review our Fastener Manufacturing Reference Guide.  This document will give you an overview of the fasteners we make across several of our facilities. 

Specialty Alloy Fastener Resources

MacLean Maynard combines application engineering with forming expertise for high temperature and high vibration fasteners. Learn how warm forming and early engineering involvement support specialty alloy fastener programs.

Read about MacLean Maynard's warm-formed fastener capabilities.

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Latest News

How Vertical Integration Reduces Program Risk Across Forging, Machining, and Molding
October 21, 2026 — Review manufacturing handoffs across forging, machining and molding, including MacLean-Fogg examples. The article outlines questions...
 
How Design for Manufacturability Cuts Program Risk and Cost
October 20, 2026 — An early design for manufacturability review connects material, geometry, tolerances and production requirements with the manufacturing...
 
Master Celebrates Ford Q1 Certification Milestone
September 4, 2026 — MacLean Master celebrated Ford Q1 certification in August: Master West regained the designation and Master East earned it for the first...
 
Celebrating 120 Years of Curtis Screw Company
February 20, 2026 — Curtis Screw Company marked its 120th anniversary in 2025. Explore its Buffalo origins, machining heritage and development into today’s...
 
MacLean-Fogg Releases Inaugural Sustainability Report
March 24, 2025 — MacLean-Fogg introduced its first Sustainability Report, covering employee development and safety, community involvement, environmental...
 
MacLean-Fogg to Sponsor Formula SAE
MacLean-Fogg (M-F) was excited to sponsor the 2017 Formula SAE® in Michigan May 10-13th. The International Formula SAE® program is a collegiate engineering...
 
4/27/2017 1:14:00 PM
Clean Snowmobile Challenge
MacLean-Fogg was proud to be back for the third year in a row to sponsor the 2017 SAE Clean Snowmobile Challenge event held at Michigan Technological University...
 
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MacLean-Fogg Corporate Office: 1000 Allanson Road, Mundelein, IL 60060-3890, US: (847) 566-0010   |   Contact Us

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