SUB SOURCE

MAKE US YOUR SOURCE FOR METAL PREP & FINISHING, POWDER COATING, NONDESTRUCTIVE TESTING & MORE.

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RESPONSIVE, ONE-STOP METAL FINISHING, COATING AND TESTING SERVICES. 

A TOTAL SOLUTIONS PROVIDER FOR CRITICAL AND SECONDARY PROCESSES FOR AGRICULTURAL, AUTOMOTIVE, AEROSPACE AND DEFENSE METAL PARTS AND COMPONENTS.

Based in Rockford, Illinois, Sub Source, Inc. offers you resources and capabilities few can match. Our 140,000 square foot facility offers multiple lines and batch capabilities for metal prep and finishing, and metal coating, as well as two nondestructive testing labs - all under one roof! So if you're looking for a NADCAP accredited and ISO certified single source solution for your critical and secondary process requirements, look no further than Sub Source! 

What's more, with over 50 years of industry and technology expertise, we excel at solving challenges with difficult parts or processes. Our dedicated expediting and logistics team reduces lead times and holds an on-time delivery performance that is greater than 94.7%. You can rely on our expertise and efficiency to carry even your most challenging project to completion.

Industry Sectors

  • Aerospace

  • Agriculture

  • Automotive

  • Communication

  • Construction

  • Defense

  • Energy

  • Machine Tool

  • Power Generation

  • Recreational

  • Technology

NDT Test Lab

Rely on our NADCAP-accredited Magnetic Particle Inspection (MPI) and Liquid Penetrant Examination (PT) to detect surface cracks, flaws, or other defects in your critical aerospace and other parts.

View Nondestructive Testing

Metal Coating

We're powder coating specialists. We also offer dry film lubricants, CARC and military spec paint, alkyd, epoxy & polyurethane paint.

View Metal Coating

Metal prep & finishing

Our metal prep and finishing services include fine- and heavy-grain zinc, manganese & iron phosphate, black oxide & more.

View Metal Prep & Finishing

Our Customers Trust Us

Jeff Swanson
Advanced Machine & Engineering Co.

Sub Source is a key component to our success. They continually thrive in the areas of quality, cost, on-time delivery and have an excellent customer service team that meet the ongoing demands of our business. They are a great supplier and will be for years to come. 

Kevin Kretsinger
Rockford Spring Company

Sub Source always comes through for our finishing needs. They go above and beyond to meet our requirements.

one-stop source

Let our dedicated team of experts coordinate all of your critical and secondary process needs. With our NADCAP accreditation and ISO certification, you can trust us to complete your project with the highest quality standards.

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