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.

BREAKING NEWS: In partnership with EJOT Taicang, our Lockthread Design and Quality are now available produced in China to serve the local Automotive Market. - Brochure (English and Chinese Language)

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. 

Chesterfield 1
Chesterfield 2

Now Producing in China!

China Partnership

In partnership with EJOT Taicang, our Lockthread Design and Quality are now available produced in China to serve the local Automotive Market.

Our Industries


From Our Experts

Fastening for High Temperature / High Vibration Joints

Latest News

MacLean-Fogg Passes Presidential Torch to the Next Generation
Barry L. MacLean, chief executive officer and chairman of MacLean-Fogg, announced the appointment of Duncan A. L. MacLean to president of MacLean-Fogg...
Lean Leadership Underway at MacLean Maynard
Lean Leadership was developed in 2014 in Mundelein to support leaders in their role of facilitating 5-S and PDCA. The Lean Leadership curriculum has reached...
MacLean-Fogg and EJOT Announce Joint Operating Agreement
Building on an existing relationship with the Global Fastener Alliance, MacLean-Fogg Component Solutions (MFCS) and EJOT recently signed an agreement to...
MFCS Sponsoring Five Michigan Tech Capstone Design Projects
Five MFCS facilities are sponsoring senior design projects at Michigan Technological University (MTU). The projects are part of the Mechanical Engineering...
MacLean Maynard Wins General Motors Supplier Quality Excellence Award Three Years in a Row
In the fall of 2014, MacLean Maynard was a member of a select group of suppliers to General Motors to win the 2014 Supplier Quality Excellence Award. From...
MacLean-Fogg Component Solutions to Sponsor 2015 Michigan Formula SAE
MacLean-Fogg Component Solutions (MFCS) is excited to announce its Silver sponsorship of the 2015 Michigan Formula SAE® Collegiate Design Competition....


Tuesday, July 28, 2015

MFCS Celebrates Three Anniversaries

2015 is a milestone year for Mac-Lean Fogg Company. Not only is the company as a whole celebrating its 90th year in business, but MacLean-Fogg Component Solutions, a division of MacLean-Fogg Company, is also celebrating significant anniversaries in three of its own divisions. » Continue Reading

Friday, April 25, 2014

MacLean ESNA Receives Nadcap Accreditation for NDT (Non-Destructive Testing)

MacLean ESNA announces that it has received Nadcap accreditation for Non-Destructive Testing. MacLean ESNA received Nadcap accreditation for demonstrating their ongoing commitment to quality by satisfying aerospace and defense customer requirements and industry specifications. The certification comes following significant investments and upgrades in ESNA's on site laboratory at the main Pocahontas, AR manufacturing site. » Continue Reading