Precision Assembly Services for Engineered Components

Wm. F. McGraw & Co. offers precision assembly services designed for the most stringent applications in industry.  Based in Riverview, MI, with decades of experience in assembling engineered components, we have assembled functional and structural components to meet applications with strict requirements.  Our practitioners are both technically knowledgeable, and our facilities are designed for assembly.  We offer the ability to manufacture custom part assembly, as well as sub-assembly services, to a complete turnkey assembly service.  Mechanical fit up, electrical function, thermal operation, etc, are all existing processes for us, and each will verify performance and functionality of every marketed part.

Mechanical Assembly Techniques

Our mechanical assembly service centers around dimensional tolerances and long-term performance in every part we manufacture. We can handle high-volume production, prototyping, mechanical assembly, different materials and components, and everything in between. Mechanical assembly services are useful for any project where long-term performance and structural integrity must be repeatable and consistent. Our technicians will always work with your engineering team to ensure appropriate fit, alignment, and function.

Bonding and Joining Methods

We apply different bonding and joining technologies to create strong, durable assemblies that will satisfy our project objectives. These technologies allow us to achieve not only the structural integrity we seek but the performance characteristics we need for the application. Some applicable technologies include: 

  • Adhesive bonding for secure and durable connections: We use adhesives that bond the materials at the molecular level, which usually leads to a uniform distribution of stress across the bond joint. Adhesive bonding can provide quality adhesion for joints subjected to vibration and for joints composed of dissimilar materials.
  • Mechanical fastening, including bolting and riveting: We have bolting and riveting methods that are traditional and accepted methods for achieving reliable bonds when repair access is available, or if it is intended for assembly to take place in the field. 
  • Press fitting for precise component alignment:  In this method, we can achieve, for example, tight interference fits between pieces and components using no adhesives or fasteners, while promoting mechanical strength and assured alignment.
  • Tapping and dowel pinning for enhanced structural integrity: We can place threaded fasteners or precision ground pins as a way to augment joints and provide alignment for mechanical assemblies.

Specialized Assembly Service

Our specialized techniques deliver tailored solutions for joining and structural reinforcement. We adapt to the unique demands of each component to ensure performance and precision.

  • Lap joint bonding for extended components: This method allows for the connection of oversized or segmented parts with high shear strength and minimal deflection.
  • Taping or bonding for insulation applications: Our precision application of insulation tapes and adhesives supports dielectric integrity and temperature resistance.

Custom joining techniques tailored to specific requirements: Whether integrating specialty adhesives, unique fasteners, or novel mechanical fixtures, we design joining methods that suit your component geometry and functional demands.

Wm. F. McGraw & Co.

We specialize in the fabrication of mold and platen insulation for the plastic injection and rubber molding industries

Electrical and Thermal Assembly Applications

We support OEMs with electrical and thermal assemblies that demand exacting performance. Whether bonding conductive paths or building components to handle heat transfer, we apply proven techniques to enhance product reliability. Our assemblies are built to meet application-specific standards for electrical insulation assembly, EMI shielding, and thermal regulation in power distribution or high-temperature systems

Electrical Component Integration

We specialize in assembling electrical components for critical performance demands. Our team brings proven experience in building complex, reliable systems:

  • Assembly of arc chutes for circuit protection devices: We fabricate and assemble arc-interruption structures used in switchgear and circuit breakers to ensure safe electrical operation.

  • Bonding conductive materials to insulation for EMI/RFI shielding: By layering conductive foils or meshes with insulation, we enable assemblies to manage electromagnetic interference without sacrificing dielectric strength.

  • Integration of connectors and contacts into terminal boards: We mount and bond terminals, lugs, and conductive contacts onto boards with precise alignment to ensure secure electrical connections.

  • Fabrication of fuse board assemblies for power distribution: Our custom fuse boards combine mechanical housing with electrical integration to safely manage loads in complex systems.

Why Choose WMF McGraw for Fabrication & Converting?

We deliver more than just components—we deliver confidence. Clients across industries depend on us for our reliable processes, specialized equipment, and tailored support.

Extensive experience in assembling complex components

We bring decades of hands-on knowledge in material behavior, bonding science, and design-for-assembly best practices.

State-of-the-art facilities equipped for diverse assembly processes

Our climate-controlled and precision-equipped workspace supports everything from kitting to final system integration.

Customized solutions tailored to your specific application needs

Every project aims to meet your product's mechanical, electrical, or environmental performance goals.

Dedicated support from concept through final assembly

We collaborate early and stay involved through prototyping, process refinement, and final delivery.

Get Started with WMF McGraw

Looking for precision, performance, and reliability in your next project? Wm. F. McGraw & Co. is your trusted partner for custom fabrication and material solutions in Riverview, MI. Reach out today to explore how our expertise, technology, and commitment to quality can bring your designs to life. Ready to elevate your project with precision components? Contact Wm. F. McGraw & Co. today to learn how our fabrication and converting services in Riverview, MI, can meet your exact specifications.