
Instant Quoting
Rapid Prototyping
High-Volume Production
Instant Quoting for Your insert-molding Needs
JS Precision provides fast and accurate quotes for your insert-molding projects. With a variety of material options, surface treatments, and precision molding capabilities, our instant quoting system is designed to provide you with a tailored and competitive offer to meet your production requirements.
Access a wide range of thermoplastics and elastomers, including ABS, PC, PP, and TPE, suitable for various product applications and industry requirements.
From texturing, polishing, to painting, we offer a range of finishing options with an average lead time of 2-5 days, ensuring the right look and feel for your parts.
Achieve tight tolerances and consistent part quality, perfect for intricate designs and functional components.
ITAR Registered
ISO 9001:2015,ISO 13485:2016,AS9100D and lATF 16949:2016 Certified



Get an instant quote today.
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Custom Insert Molding Services
JS Precision provides professional custom insert molding services, precisely placing metal parts, ceramic substrates or electronic components into molds for one-shot injection molding integration. This technology enhances structural strength, improves electrical connectivity and simplifies assembly processes, ideal for electronic connectors, automotive sensors and smart device housings.
Rapid Quoting & Solution Evaluation: Receive overmolding solution analysis and accurate quotes by submitting insert 3D models and plastic part design
Precision Insert Molding Technology: Expert in micro-insert positioning molding, achieving optimal bonding strength between plastic and inserts
Professional Mold & Process Support: Provide comprehensive technical support including insert positioning, mold structure optimization and parameter tuning
Integrated Cost Optimization: Reduce secondary assembly steps and lower overall manufacturing costs through integrated production

Insert-Molding Service
Insert-Molding Product Showcase
JS Precision provides insert molding solutions that seamlessly combine metal or other materials with plastic to create robust, high-performance parts. This process ensures strong, precise components that are ideal for applications requiring integrated assemblies and enhanced functionality.
Insert-Molding Tolerances
JS Precision specializes in insert molding, combining metal and plastic components with tolerances from ±0.01 mm to ±0.05 mm. This ensures durable, high-strength bonds with exceptional precision.
Feature
Description
Maximum Part Size
1200×1000×500 mm
Minimum Part Size
5×5×5 mm
Part to Part Repeatability
+/- 0.1 mm
Mold Cavities
Single-cavity molds, multi-cavity molds, family molds
Available Mold Types
Steel and aluminum molds. Production levels below 1000, 5000, 30000, and over 100000 uses
Mold Cavity Tolerances
+/- 0.05 mm
Secondary Operations
Mold texturing, pad printing, laser engraving, threaded inserts, and basic assembly
Undercuts
Y-type, L-type undercuts
Wall Thickness
0.5 mm to 5 mm
Draft
0.5° to 2°
Ribs/Gussets
0.5 mm to 3 mm thick
Bosses
Diameter 3 mm to 10 mm
Production Options
Domestic and international
Lead Time
Starts at 5 business days, including fast quote responses with design-for-manufacturing (DFM) feedback
Materials
Most plastics, including custom sourcing and matching; see materials list below
Machines Available
Single, multi-cavity, and family molds; 50 to 1,100+ press tonnage; side actions including hand-loaded cores.
Inspection and Certification Options
Includes FAI and PPAP. ISO 9001, AS9100, ISO 13485, UL, ITAR, and ISO 7 and 8 Medical Clean Room molding.
Tool Ownership
Customer-owned with mold maintenance
Standard Lead Time
3 Business days
Insert-Molding Material Selection
JS Precision provides insert molding to produce strong, functional parts using ABS, PLA, and PETG. Ideal for industries like consumer products, automotive, and education, this method is perfect for low to medium volume production, offering precision and durability in every design.
Metals
- Titanium
- Steel
- Stainless Steel
- Zinc Alloy
- Chromium-Nickel Alloy
- Brass
- Copper
- Aluminum
- Bronze
- Cold Rolled Steel
- Nickel
- Silver-Tin Oxide
- Cast Iron

Titanium is known for high strength, low weight, and corrosion resistance. We process grades like Ti-6Al-4V, Ti-5Al-2.5Sn, Ti-6Al-4V ELI, and Ti-Grade 2, which are widely used in aerospace, medical implants, and sports equipment.
Plastics
- Polycarbonate (PC)
- Polyoxymethylene (POM)
- Polyphthalamide (PPA)
- Polyphenylene Sulfide (PPS)
- Teflon (PTFE)
- Polyvinyl Chloride (PVC)
- Ultra High Molecular Weight Polyethylene (UPE)
- Polyether Ether Ketone (PEEK)
- Nylon (PA)
- Glass-Filled Nylon

Polycarbonate is a transparent, highly durable plastic known for its superior impact resistance. We offer different grades suitable for eyewear lenses, medical devices, and protective equipment.
We offer customization based on your specific material requirements, if you need a material not listed here, our team can source and process ito meet your exact needs
Insert-Molding Surface Finishing
Enhance your insert molded parts with our surface finishing services. By polishing, coating, and texturing, we improve both the aesthetics and functionality of your components, ensuring they meet the highest quality standards.
Insert-Molding Advantages & Features
JS Precision offers a unique blend of technology and precision, making us the perfect partner for complex insert molding projects. Whether you're working with intricate designs or require high-volume production, we have the expertise to meet your specific demands. Here’s what makes us the preferred choice for your molding needs:

Precision-Driven Integration of Materials
We specialize in the integration of metal inserts into plastic components through our advanced insert molding technology. This allows for stronger, more durable parts, combining the benefits of both materials in a single, precise operation. Ideal for demanding industries such as automotive, medical, and electronics, our solution ensures reliability and superior performance.

Built to Last – Stronger and More Durable Products
Insert molding enhances the strength and longevity of your components by integrating metal parts with molded plastics. This method provides robust, long-lasting products that are perfect for applications where durability and performance are critical—whether in machinery, vehicles, or medical devices.

Fast and Efficient Turnaround for Your Tight Deadlines
We know the importance of meeting project deadlines. With our streamlined production process, we can deliver your products quickly while maintaining the highest standards of quality. Whether you need small quantities or larger volumes, we ensure your production schedule is met on time, every time.

Wide Range of Materials to Fit Your Specific Needs
Our insert molding services offer flexibility with a wide variety of materials, including metals like brass, aluminum, and stainless steel, as well as ceramics and electronics. This adaptability means we can meet the unique requirements of your project, regardless of the industry or application.

Scalable Solutions for Both Small and Large Runs
From prototype testing to mass production, JS Precision offers scalable insert molding solutions. Whether you need a few parts for testing or thousands for a large-scale production run, we efficiently manage both small and large orders, giving you the flexibility to scale as your project evolves.

Uncompromised Quality at Every Step
Our dedication to quality is evident in every part we produce. With strict quality control processes, precision measurements, and in-process inspections, we ensure that every part meets the highest standards. Our ISO 9001 certification further demonstrates our commitment to delivering flawless parts for your needs.

Insert-Molding Case Studies
JS Precision’s insert molding technology is designed to deliver high-performance, durable components that combine metal inserts with plastics. Our solutions are built to withstand challenging conditions and provide long-lasting results. Discover how we support a wide range of industries with tailored insert molding solutions that maximize efficiency and reliability.
Insert-Molding Quality Control
At JS Precision, we specialize in insert molding to deliver products that excel in precision, strength, and performance. We combine innovative technology with meticulous attention to detail to create components that perfectly integrate into your final product, ensuring long-lasting durability and functionality.
In-Process Inspections
Before any part leaves our facility, it undergoes a thorough final inspection. We use advanced measurement tools to verify that every component meets required specifications and precision standards, ensuring the highest level of quality before delivery.
Final Inspections
Before any part leaves our facility, it undergoes a thorough final inspection to verify its quality and precision. We use advanced measurement tools and techniques to ensure that each part meets the required specifications and standards.
Precision Measurement Tools
To achieve the highest standards in insert molding, we utilize advanced measurement tools like Coordinate Measuring Machines (CMM) and specialized gauges. This guarantees that your parts are made to the tightest tolerances, ensuring consistent quality and performance.
Certified Quality Standards (ISO 9001, ISO 14001, IATF 16949, AS9100D)
Our commitment to quality is backed by ISO 9001 certification, which ensures our quality management system is consistently effective and continually improving. We also adhere to ISO 14001, IATF 16949, and AS9100D standards, ensuring we meet the needs of various industries while maintaining environmental sustainability and operational excellence.
Continuous Improvement
We believe in continuous improvement and regularly review our processes and practices to identify areas for enhancement. By investing in the latest technologies and training for our staff, we strive to maintain our reputation for quality and innovation.

Contact Us for More Information
Should you have any additional questions or require more details, feel free to reach out to us. Our dedicated team is ready to assist you with all your precision manufacturing requirements.
We know that choosing the right manufacturing process is crucial for your project's success. To help you make an informed decision, we've answered some of the most common questions about our insert molding services. Should you need additional information, our team is always here to support you.
What Our Clients Say About Us
A customer's words mean more than ours see what our satisfied customers have saidabout how we fulfilled their requirements.
Insert-Molding Latest News
Stay informed with the latest updates and announcements from JS Precision. Learn about our most recent projects.




































