Custom Assembly Services for Metal & Plastic Parts
From individual components to ready-to-install assemblies — integrating machining, molding, sheet metal, finishing, hardware installation, inspection, packaging, and global delivery into one accountable supply chain.
Tired of Managing Too Many Suppliers?
Sourcing parts from multiple vendors often leads to fitment issues, missing components, and delayed production. LK Tools solves this by taking full responsibility.
Mismatched Parts
Parts manufactured by different suppliers often fail to fit together during final assembly due to tolerance stack-ups.
Missing Components
Production halts because of missing screws, pins, threaded inserts, labels, or critical COTS accessories.
Late Defect Discovery
Assembly defects or cosmetic damages are found too late, causing rework, extra labor, and missed deadlines.
The LK Tools Solution: We help consolidate manufacturing, surface finishing, hardware sourcing, assembly, inspection, and delivery into one accountable supply chain.
Assembly Solutions for Custom Manufactured Parts
We don't just make parts; we deliver complete modules ready for your production line.
Mechanical Assemblies
Brackets, housings, covers, frames, panels, enclosures, and complex machined part integrations.
Sheet Metal Assemblies
Welded structures, riveted joints, PEM fastener installation, and complete cabinet assemblies.
Plastic Part Assemblies
Injection molded parts combined with threaded inserts, clips, covers, and electronic housings.
CNC Machined Assemblies
Precision machined components fitted with pins, bushings, bearings, and specialized fasteners.
Die Cast Assemblies
Cast housings complete with secondary machining, coating, inserts, labeling, and protective packaging.
Kitted Component Sets
Multiple parts and hardware packed together logically for easier receiving and immediate production use.
Comprehensive Assembly Capabilities
A full suite of services to turn raw manufactured parts into finished goods.
Hardware Installation
Mechanical Assembly
Welding & Joining
Labeling, Marking & Kitting
Labeling & Marking
- Product & Serial Labels
- Laser Marking
- Silk Screen & Pad Printing
- Barcode Labels
Kitting & Packaging
- Individual Bagging & Multi-part Kits
- Custom Cartons & Protective Foam
- Assembly-ready Packaging
- Customer-specific Labels
BOM Review Before Production
Before any assembly starts, the LK Tools engineering team rigorously reviews your Bill of Materials (BOM), 2D/3D drawings, hardware lists, and packaging requirements. This proactive step significantly reduces the risk of missing parts, fitment issues, and production delays.
From Parts Manufacturing to Finished Assemblies
A streamlined, single-source workflow designed to reduce your coordination efforts and lower mismatch risks.
Upload Data
Drawings & BOM
DFM & Review
Lower mismatch risk
Manufacturing
Fewer suppliers
Surface Finish
Less coordination
Hardware Sourcing
Standard components
Assembly & QC
Ready-to-use products
Packaging
Better delivery control
Assembly Quality You Can Verify
We do not merely assemble parts. We rigorously verify that the final assembly meets your drawing, BOM, and functional requirements before shipment.
Ready for Receiving & Production
Our packaging solutions are designed to reduce your receiving time, warehouse confusion, and production line handling.
- Individual packaging & Assembly kits
- Customer part number & Barcode labels
- Lot tracking & Carton labels
- Protective packaging for cosmetic parts
- Palletization & DDP shipping documents
COTS Hardware Sourcing Support
If your assembly requires standard Commercial Off-The-Shelf (COTS) components, we source approved hardware based on your BOM.
Integrated Manufacturing + Assembly
Combining our core manufacturing strengths with final assembly to deliver complete solutions.
CNC Machining + Assembly
Machined housings, brackets, shafts, pins, and precision components fitted together seamlessly.
Sheet Metal + Assembly
Enclosures, cabinets, panels, welded frames, and PEM hardware installation.
Injection Molding + Assembly
Plastic housings combined with metal inserts, labels, clips, and protective packaging.
Die Casting + Assembly
Cast housings featuring secondary machining, coating, threaded inserts, and fasteners.
Surface Finishing + Assembly
Anodizing, powder coating, plating, marking, labeling, and cosmetic protection applied before final integration.
Clear Responsibility Before Production
Defining roles upfront eliminates misunderstandings and ensures a smooth assembly process.
| Buyer Provides | LK Tools Provides |
|---|---|
| • 2D drawings & 3D CAD files | • DFM (Design for Manufacturability) review |
| • Complete Bill of Materials (BOM) | • BOM review & discrepancy checks |
| • Assembly instructions / SOPs | • Component manufacturing & finishing |
| • Approved hardware specifications | • Hardware sourcing support |
| • Packaging requirements | • Assembly & functional/fitment checks |
| • Quality acceptance criteria | • Final inspection, packaging & shipping support |
Note: Clear assembly instructions help reduce risk, improve quality, and shorten lead time.
Assembly Services for OEM Products
How Assembly Services Reduce Supply Chain Complexity
Real-world examples of how integrating manufacturing and assembly saves time and money.
Sheet Metal Enclosure Assembly
Customer previously sourced panels, fasteners, powder coating, and packaging from multiple suppliers, leading to delays and finish mismatches.
LK Tools produced, coated, installed hardware, and packaged complete enclosures in-house.
Reduced supplier coordination and drastically improved delivery consistency.
CNC Machined Housing Kit
Customer needed complex machined parts, specific pins, custom labels, and protective packaging.
LK Tools provided 5-axis machining, anodizing, hardware installation, and custom kitting based on the BOM.
Customer received ready-to-use kits instead of loose parts, saving warehouse sorting time.
Plastic + Metal Product Assembly
Plastic covers and metal brackets had recurring fit issues when sourced from separate facilities.
LK Tools manufactured both components, reviewed the tolerance stack-up, and assembled the parts before shipment.
Completely eliminated assembly rework at the customer's facility.
One Accountable Partner From Parts to Finished Assemblies
Partnering with LK Tools means you get the cost benefits of overseas manufacturing combined with the reliability of a local partner.
- China manufacturing cost advantage
- US sales support & communication
- In-house CNC, sheet metal, molding & casting
- Comprehensive hardware installation & kitting
- Strict quality inspection before shipment
- DDP global delivery & US Warehouse support
- Scalable from prototype to high-volume production
Assembly Support Center
Answers to common assembly, inspection, packaging and shipping questions.
Can you assemble parts made by LK Tools?
Can you assemble customer-supplied parts?
Can you install PEM fasteners, threaded inserts or pins?
Can you provide screws and standard hardware?
Can you inspect assemblies before shipment?
What documents do you need for an assembly quote?
Can you do kitting and individual packaging?
Can you add labels or barcodes?
Can you ship DDP and hold inventory?
Assembly Project Checklist
- BOM Available
- Assembly Drawing Ready
- Hardware Defined
- Label Requirements Defined
- Packaging Requirements Defined
- Inspection Criteria Defined
Provide complete assembly instructions before production to reduce assembly errors and delays.
Industrial Control Box Assembly
- Sheet Metal Fab
- Powder Coating
- Hardware Install
- Labeling
- Final Inspection
- DDP Delivery
Need Assembly Support?
- BOM
- Assembly Drawing
- Packaging Reqs
- Assembly Review
- Cost Opt. Suggestions
- Packaging Recs
- Quote Within 24 Hours
Need Ready-to-Install Assemblies?
Send your drawings, BOM, and assembly requirements. Our team will review manufacturing, hardware, finishing, inspection, and packaging before quoting.