Contract Electromechanical Assembly
Most OEMs and prime contractors don’t have a gap in what they can build. They have a gap in capacity, in floor space, or in the time it takes to manage another line item internally. That’s where we come in. Filly Fabricating is a contract electromechanical assembly partner for transit, power distribution, and industrial OEMs that need a second set of hands on a piece of the build, without handing off control of the program.
Contract Electromechanical Assembly
Most OEMs and prime contractors don’t have a gap in what they can build. They have a gap in capacity, in floor space, or in the time it takes to manage another line item internally. That’s where we come in. Filly Fabricating is a contract electromechanical assembly partner for transit, power distribution, and industrial OEMs that need a second set of hands on a piece of the build, without handing off control of the program.
We’ve been active since 2009, working as the behind-the-scenes assembly partner for prime contractors who want their product built right, shipped on time, and managed without the back-and-forth. We build to your spec. We don’t engineer your product, and we don’t redesign it. We follow your drawings, your revisions, and your quality standards.
What Contract Electromechanical Assembly Looks Like at Filly
Electromechanical assembly is the integration of electrical components, wiring, mechanical hardware, and, depending on the build, embedded electronics into a finished or near-finished subassembly. For OEMs in transit vehicles, propulsion systems, and power distribution, that work is usually one piece of a much larger program. Our role is to take a portion of that program and run it cleanly, so your team can focus on the rest of the product.
Our work falls into four core areas. Most projects pull from more than one.
Integrated Subsystem Assembly
We build complete electromechanical subsystems; control housings, operator interfaces, relay and sensor integration, power distribution modules, PCB integration, and actuator-based assemblies. Multi-component builds where the electrical, mechanical, and packaging all have to come together correctly the first time. Each unit is built, inspected, and packaged with the next person on the line in mind, because the person assembling it is not the person packing it. Every unit gets more than one set of eyes.
Wiring and Cable Assembly
Connectorization, crimping, termination, labeling, routing, bundling, and strain-relief management. Every wiring assembly goes through continuity and functional testing before it leaves the floor.
Mechanical Assembly and Integration
Mounting, fasteners, torque control, subframe alignment, enclosure integration, and mechanical fit checks. We torque to spec, document it when required, and verify mechanical function before electrical testing begins. Bus bar assemblies, motor control hardware, and transit propulsion components have all gone through this process.
Why Prime Contractors Use Us Instead of Building It In-House
A lot of our customers can do this work themselves. They do it themselves until they run out of capacity or space, and then they call us. The math usually looks like this: building one more assembly line in-house means hiring, training, finding floor space, and absorbing the overhead even when the program slows down. Sending the work to a contract electromechanical assembly partner means we have solutions to help you minimize costs.
We’re also realistic about fit. If a project’s volume is too high for us, or if it requires testing equipment we don’t have and the program isn’t long enough to justify the investment, we’ll tell you. We’ve won more business by being honest about that than we’ve lost.
Quality, Testing & Traceability
We operate under an ISO-aligned quality system. Every assembly is electrically verified, mechanically inspected, and functionally validated where the build requires it. Documentation and traceability are built in for any customer that needs an auditable production record — which, in transit and power distribution, is most of them.
We’re not ISO-certified, and we’re transparent about why. We work with multiple prime contractors, each with their own quality manual, their own forms, and their own audit process. A single ISO certification would lock us into one set of procedures and make it harder to comply with each customer’s actual requirements. Instead, we maintain our own internal quality program and meet each customer’s standards on their terms. We’ve passed prime-contractor quality audits modeled on those exact standards, including a 98.56 out of 100 supplier scorecards from a major transit OEM.
Every build leaves the floor with more than one set of eyes on it. The person building is not the person packing. That’s the rule, and it’s the reason our rejection rate stays where it does.
DBE-Certified Manufacturing Partner
Filly is a certified Disadvantaged Business Enterprise (DBE) and Woman-Owned Business Enterprise (WBE), with active DBE certifications in eight states including New York, California, Georgia, Texas, Pennsylvania, Maryland, Massachusetts, and Washington, D.C. For federally supported transit projects and OEMs that need to meet supplier diversity requirements, we count toward those goals without compromising on quality or delivery.
We track upcoming transit programs and add state certifications ahead of need, so when a prime contractor wins a project in a new state, we’re already certified there.
Why Manufacturers Choose Filly as Their Electromechanical Assembly Partner
- Active in contract assembly since 2009, working primarily with transit and power distribution OEMs.
- Build-to-spec, not build-to-suggest. We don’t redesign your product. We follow your drawings.
- Scalable end-to-end manufacturing support, tailored to your project. Pick what you need — assembly, kitting, warehousing, rework — in any combination.
- Quality, you can audit. Documented processes, traceability, multi-stage inspection, and a 98.56/100 supplier scorecard on record from a major transit OEM.
- DBE certified in eight states. Active certifications across NY, CA, GA, TX, PA, MD, MA, and DC.
- Realistic about fit. We don’t overpromise. If a project isn’t right for us, we’ll say so.
Talk to Us About Your Build
If you have an electromechanical subassembly that’s eating up your floor space, your headcount, or your program manager’s calendar, we should talk. Send us your drawings and a description of the work, and we’ll come back with a straight answer on whether we’re a fit.
Request a quote or call us at 412-896-6452.
