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Need Custom Parts?

Top Parts is a sourcing platform built for engineers and purchasing teams. Find qualified U.S. manufacturers by process, capability, or location — and connect directly with the right suppliers.

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Are You A Custom Manufacturer?

Top Parts helps custom manufacturers grow their business by improving visibility, showcasing capabilities, and connecting with industrial buyers.

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Find Suppliers by Capability


Additive Manufacturing


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Assembly


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Casting


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Extrusion


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Fabrication


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Forging


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Grinding


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Heat Treating


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Industrial Components


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Machining


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Metal Finishing


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Mold Making


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Molding


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Powdered Metal Forming


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Stamping


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Surface Coating


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Featured Custom Manufacturers


Sample Parts from Our Members


S.M. Heat Treating

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Pivot Point Fastener

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Trinity Finishing

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PSP Stamping

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BUWW Machined Parts

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Yarde Metals Custom Extrusions

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DMFI Press Brake

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SPI Injection Molding

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Haake Mfg Press Brake Parts

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Protocast Die Casting

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Maki Machined Parts

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MWG Machining

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Featured Case Studies


Metal Finishing for Corrosion Resistance...

Modern manufacturing environments demand extreme reliability...

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Forging of High-Strength Steel Component...

Modern heavy equipment manufacturing relies on par...

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Aluminum Die Casting for Lightweight Str...

Project:Manufacturing of lightweight aluminum components for...

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CNC Turning and Secondary Operations for...

Project:Production of precision brass fittings used in fluid...

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Rapid Prototyping of Sheet Metal Bracket...

Project:Prototype development of custom brackets for industr...

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Powder Metal Sintering for Cost-Effectiv...

Project:High-volume production of small gears for mechanical...

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From RFQ to Delivery in 12 Days: Rapid M...

Overview:A manufacturer faced an urgent need for precision m...

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Fabrication and Assembly of Stainless St...

Project:Production of custom electrical enclosures for indus...

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Solving a Complex Casting + Machining Co...

Overview:A buyer needed a complex component requiring both c...

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Reducing Total Cost by 22% on a Multi-Pr...

Overview:An OEM required ongoing production of a machined al...

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Closed-Die Forging with Precision Machin...

Project:Manufacturing of high-strength forged components for...

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Injection Molding of High-Volume Consume...

Project:Production of plastic housings for consumer electron...

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Frequently Asked Questions





For Buyers


For Suppliers


What is Top Parts?

Top Parts is a sourcing platform that connects industrial buyers with verified U.S. manufacturers, suppliers, and technology vendors.


How do I get listed on Top Parts?

Click “Join Now” to create a profile. You can choose from Basic, Premium, or Enterprise plans with a 14-day free trial.


Can I submit an RFQ for custom parts?

Yes. You can submit a Request for Quote (RFQ) directly through our sourcing service. We’ll match your project with qualified suppliers.


What types of suppliers can join?

We welcome U.S. job shops, industrial suppliers, equipment vendors, and technology providers.


Is there a cost to use Top Parts as a buyer?

No. Buyers can browse suppliers and submit sourcing requests for free.


Can I showcase my shop’s capabilities?

Yes. Members can post photos, videos, job listings, sample parts, and more based on their plan level.


What industries and processes are covered?

Top Parts covers machining, sheet metal, fabrication, casting, automation, and industrial supplies across all major custom manufacturing capabilities.

What is the difference between Basic, Premium, and Enterprise?

Plans vary by visibility, features, and number of categories listed. See our Pricing Page for full details.

Who runs Top Parts?

Top Parts is an independent platform built to support American industry. You can contact us anytime at team@top.parts.


Is Top Parts focused only on the U.S. market?

Top Parts primarily promotes American manufacturers. For tech partners, visit Top Parts Technology. For global suppliers, visit Top Parts International.



Choose the Right Platform for Your Business





Top Parts Technology

Showcase your manufacturing tech solutions to a targeted audience.

Showcase Your Tech Solutions

Top Parts International

Join our global directory to reach more industrial buyers.

Join the Global Supplier Network

Top Parts Industrial

Showcase your industrial products to support manufacturers.

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