Insert Molding Services
Durable, Precision-Made Plastic Parts with Embedded Components
EZRA’s insert molding process combines plastic molding with pre-placed metal or other components to produce strong, integrated parts. Ideal for applications that require enhanced strength, precision alignment, or electrical connectivity.
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- 98.5%on-time delivery
- 28M+parts shipped
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What Is Insert Molding
Insert molding is a manufacturing process where pre-formed components—such as metal inserts, threaded fasteners, or electrical contacts—are placed into a mold before molten plastic is injected. Once cooled, the result is a single, integrated part with both the strength and functionality of multiple materials.
Benefits
Great process for parts that are:
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Low to medium volumes – Often under 50,000 parts.
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Require mechanical strength – Threaded inserts, load-bearing parts.
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Electrical functionality – Contacts, terminals, conductive pathways.
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Precision alignment – Components that must maintain exact position.
From Prototypes to Production
Ezra covers every stage of your product lifecycle, from rapid prototyping to small batches and high volume production, offering an on-demand manufacturing tool, cost-effective solutions, and fast lead times.
Prototyping Injection Molding
Start fast with Ezra’s prototyping services using 3D printing, CNC machining, or soft tooling. Ideal for design validation and functional testing before committing to tooling.
- Quantity: 1-100 pcs
- Lead Time: 1-7 days
- Free Lifetime Tooling Maintenance
- Flexible prototyping with multiple methods
Low Volume Injection Molding
We use aluminum tooling and rapid molding techniques to deliver cost-effective, short-run parts with high precision. Perfect for pilot production or bridging the gap to full-scale manufacturing.
- Quantity: 100–10,000 pcs
- Lead time: 3–5 weeks
High Volume Production
Ezra specializes in high-volume injection molding with low cost and scalable output. We offer over 100+ thermoplastic and thermoset materials, supporting even the most demanding production needs.
- Quantity: 10,000+ pcs
- Lead time: 4–7 weeks
- Competitive pricing for large orders
Where Insert Molding Works Best
Insert molding is used when durability, precision, and efficiency are critical. It’s common in:
Electrical Connectors
Metal-contact connectors, terminal blocks, plug housings, and sensor mounts for electronics and automation.
Automotive Components
Shift knobs with embedded metal cores, ignition key housings, and engine sensor brackets.
Medical Device Housings
Endoscopic tool handles, implantable casings with metal reinforcement, and diagnostic device shells.
Industrial Fastening Parts
Threaded inserts in plastic housings, machine mounting brackets, and alignment fixtures.
Consumer Products
Appliance handles, wearable device frames, and protective covers with embedded hardware.
From First Upload to Final Part
Ezra combines engineering insight, rapid prototyping, and scalable production into one seamless custom injection molding service.
Secure File Handling
We protect your CAD files and drawings with strict confidentiality protocols. From NDA support to access-restricted project views, your intellectual property stays secure throughout the manufacturing process.
- NDA available upon request
- Encrypted file uploads
- Internal-access only policy
Designing for Manufacturability Report
Every project is reviewed by experienced engineers who provide free DFM and Moldflow reports. Get actionable insights to optimize part design before tooling begins.
- DFM + Moldflow review included
- Faster iterations, fewer tooling errors
- Early risk detection
Fast and Flexible Prototyping
Validate designs quickly with our rapid prototyping option, including 3D printing, CNC machining, and soft tooling, to accelerate every stage of the product development cycle.
- 3D print, CNC, or soft mold options
- Lead time as fast as 1–2 weeks
- Small-batch or one-off production
Factory Price at Scale
With in-house tooling and injection molding, we offer unbeatable pricing on high-volume orders. Get consistent quality control and global delivery without the middlemen.
- 100+ plastic material options
- Capacity for 10k+ parts/month
- Lower cost per part with volume
Our Insert Molding Process
Request a Quote & DFM Review
Share your part design, receive a quote in 24h, and get a free DFM analysis.
Mold Design & Flow Simulation
We create your mold design and run mold flow analysis to optimize material flow, cooling, and part quality.
Tooling & T1 Sample
We begin tooling using premium-grade materials. T1 samples are delivered within 2–3 weeks for your inspection and approval.
Low-Volume Production
Once the sample is approved, we move into production — with full traceability, precision machining, and on-site QC inspection.
Final QA & Secure Delivery
Our QC team performs strict final inspections.
Parts are securely packaged and delivered worldwide through trusted logistics partners.
Industries We Serve
EzraMade’s clients come from multiple industries. Whether you produce medical devices, cars, or consumer goods, you'll find us to be a reliable injection molding partner. Our injection molding services are designed for ultimate predictability in costs and quality.
Your Parts, Our Responsibility
Talk to our injection molding engineers to find out how we can meet your requirements.
Tell us about your project!
Insert Molding FAQs
What types of inserts can be used in insert molding?
Common inserts include brass or stainless steel threaded inserts, metal pins, electrical contacts, and custom-machined components.
Is insert molding cost-effective for low volumes?
Yes, especially when the part’s functionality or assembly time benefits outweigh the mold investment.
What are the material options for the plastic portion?
Most thermoplastics can be used, including ABS, PC, Nylon, and PBT, depending on mechanical and thermal requirements.
How precise is the positioning of inserts?
With proper mold design and fixtures, positional accuracy can be maintained within ±0.05 mm.
Can insert molding be combined with overmolding?
Yes, it is possible to first mold a part with inserts and then overmold it with a secondary material for added grip or protection.
