O'Fallon Casting's facility is located in O'Fallon, Missouri near St Louis.
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O'Fallon Casting wins a Best in Class award for it's aluminum manifold body casting in the 2018 AFS Casting Contest.

O'Fallon Casting has completed their certification to the newest revision of AS9100, revision D.

Construction on Phase 2 of O'Fallon Casting's expansion is nearly complete.  The construction phase of the project will be complete by the end of the second quarter of 2018. The new pre-inspection, shipping and fixture rooms are complete and ready for equipment.  The new lunch and restrooms are being built

Technical Articles

The DOD “Better Buying Power” objective as stated by Dr. Carter, is to procure the goods and services needed by the country’s Warfighters within the constraints of Congressional Budget and the overwhelming need to upgrade and replace equipment currently in the field. 

Many confuse the word “Affordability” with the word “Price”.  They are not the same and there are quite a large number of articles available that are devoted to defining Affordability.  The short rendition, however, is that Affordability equates to the total cost of ownership.

Over the years, we have had the pleasure of having participated in numerous Collaborative Engineering events, several of which were quite unforgettable.  One instance occurred about ten years ago and began with a rather panicked phone request from an owner of a machine shop.  As it stood he was seriously delinquent on a contract because multiple casting suppliers had proven unable to produce a particular casting to print.  They had suggested their customer that O’Fallon Casting might be able take one of the existing two molds and manufacture “good” castings from it. 


As a premier manufacturer of investment castings, O’Fallon Casting holds itself to the very highest of standards.

Our Services:

O'Fallon Casting's Laser Marking provides its customers with a new option for a consistently legible,...

Digital Radiography captures an X-ray image digitally, removing film from the equation and simplifying the...

To reduce the time and cost of bringing new parts to market, customers increasingly are...