Turnkey Contract Assembly Services

Production-ready assemblies manufactured under one roof to simplify your supply chain and reduce vendor coordination.

Supply Chain Simplification

From Raw Material to Final Product.

Managing multiple suppliers adds cost, complexity, and risk to every project. When machining, fabrication, welding, and assembly are spread across different vendors, lead times increase and coordination becomes more difficult.

Kelley Engineering simplifies the process by bringing these capabilities together under one roof. Our assembly team integrates components into production-ready assemblies, helping customers reduce supplier complexity, improve quality, and keep projects moving.

Turnkey Box Builds

Full mechanical and electromechanical integration for complex OEMs.

Functional Testing

End-of-line verification and testing to guarantee performance out of the box.

Kitting & Packaging

Custom crating, protective packaging, and sub-assembly kitting.

Reduced Freight

Eliminate the cost of shipping disparate parts between multiple vendor facilities.

Assembly Capabilities & Logistics

We handle the heavy lifting from final torque checks to custom crating.
  • Complex Mechanical Assembly
  • Electromechanical “Box Builds”
  • Hardware & Bearing Installation
  • Pneumatic & Hydraulic Routing
  • Sub-assemblies for Production Lines
  • End-of-Line Functional Testing
  • Factory Acceptance Testing (FAT)
  • Precision Torque Verification
  • Final Visual & Cosmetic Inspection
  • ISO 9001:2015 Quality Documentation
  • Custom Crating for Heavy Equipment
  • Sub-assembly Kitting & Bagging
  • Barcoding & Custom Labeling
  • Kanban & JIT Inventory Support
  • Direct-to-Stock Shipping Integration

Single-Source Accountability

When parts don’t fit during assembly, multiple vendors point fingers. When Kelley Engineering handles your project from raw material to final assembly, we own the quality 100%. If an adjustment is needed, it happens instantly on our shop floor, saving you weeks of downtime.

Our Work

Complete Turnkey Solutions

Examples of finished electromechanical builds and large-scale industrial packaging completed in our facility.

5-Axis Aluminum Housing
Aerospace Component

Large Envelope Steel Frame
Industrial Manufacturing

Precision Turned Shafts
High-Volume Automotive Run

Ready to simplify your supply chain?

Upload your CAD files, BOMs, and schematics today. Let Kelley Engineering handle your final assembly.