Medical Device Fastener Manufacturer
Justwintec is a medical device fastener manufacturer in China, supplying custom screws, bolts, pins, rivets and precision metal parts for medical equipment, mobility devices and mechanical assemblies.
Custom Medical Device Fasteners with Engineering Support
Medical device fasteners require precise fit, stable performance and reliable coordination with the complete assembly. We support every stage from drawing review and sample production to failure analysis and final delivery, helping you reduce test failures, repeated modifications and batch variation.
For custom medical fasteners, we can optimize the structure, tolerances and thread fit without requiring major changes to the main equipment design.
We offer a range of significant benefits:
01. Earlier Identification of Assembly Risks
Drawing review before tooling helps identify potential fit and performance problems before they affect samples or delay product development.
How we support you:
- Review the screw and mating-component drawings together
- Check thread size and engagement length
- Evaluate shoulder, step and head dimensions
- Review assembly clearance
- Identify possible interference
- Confirm critical tolerances
- Suggest manufacturable improvements
This helps reduce repeated sampling, failed assembly tests and unexpected redesign work.
02. Practical Solutions When a Drawing-Based Part Fails
A fastener can meet the drawing and still fail inside the finished equipment. We help find the actual cause rather than repeatedly producing the same design.
How we support you:
- Inspect failed samples
- Compare approved and failed parts
- Review wear or deformation points
- Analyze thread and structural fit
- Check the relationship between connected components
- Propose small, controlled design changes
- Produce revised samples for validation
Our goal is to solve the assembly problem while minimizing changes to the customer’s main product structure.
03. More Reliable Structure, Tolerance and Thread Fit
Medical equipment assemblies often require precise interaction between screws, brackets, forks, shafts and moving components. We control material performance, dimensional accuracy, thread quality and final inspection to ensure reliable assembly performance.
How we achieve it:
- Material Mechanical Performance Testing
Each production batch undergoes mechanical testing, including Rockwell hardness, tensile strength, fatigue performance and torque coefficient testing to ensure material reliability. - Precision Dimensional Control
Critical dimensions including head diameter, rod diameter, shoulder length and thread dimensions are controlled with IT6–IT7 precision tolerances to ensure consistent assembly fit. - Precision Machining and Thread Manufacturing
CNC centering machines and precision thread rolling machines are used to ensure the accuracy of thread profiles, step dimensions and overall component consistency. - 100% CCD Optical Inspection
CCD vision inspection systems perform 100% inspection of dimensions, thread defects, surface defects and burrs to prevent defective parts from reaching customers. - Thread Fit Verification
Go/no-go gauges and thread gauges are used to verify thread accuracy and ensure smooth assembly performance. - Complex Profile Measurement
Two-dimensional optical measuring equipment is used to inspect complex profiles and critical geometric features. - Complete Inspection Documentation
We can provide dimensional inspection reports, salt spray test reports and mechanical performance reports to support customer quality verification and project approval.
04. Lower Tooling Costs for Custom Medical Fasteners
Medical fastener projects are often customized and ordered in smaller quantities. Developing a completely new mold for every project can significantly increase the initial cost.
How we reduce tooling investment:
- We maintain a long-established tooling library.
- We have thousands of sets of custom molds.
- Existing molds are reviewed before new tooling is developed.
- Suitable tools can be modified for similar structures.
- Minor changes may only require adjusting punches, dies or secondary fixtures.
- Cold forming and machining can be combined according to the required quantity.
- Tooling plans are selected based on project volume and long-term demand.
Our 10,000+ m² self-owned manufacturing base also helps us control operating, production and tooling costs.
05. Flexible Support for Small-Batch Custom Orders
New medical equipment projects usually begin with prototypes, validation batches or limited market releases. Large minimum orders may create unnecessary inventory and development risk.
How we support smaller projects:
- Small trial orders are available.
- MOQ can be discussed according to product structure.
- Flexible production lines support different batch sizes.
- Existing molds may be adapted for sample production.
- CNC machining can be used for early-stage validation.
- Production can scale after the design is approved.
This allows startups, product developers and established manufacturers to validate a new design before committing to mass production.
06. A Smoother Transition from Prototype to Mass Production
A successful sample must also remain consistent when the order enters repeat production.
How we control the transition:
- Approved samples are retained as references.
- Material and tooling information are recorded.
- Critical dimensions are defined in the inspection plan.
- First-piece inspection is completed before each batch.
- In-process inspection monitors dimensional variation.
- Final inspection is completed before packing.
- Inspection reports can be provided according to order requirements.
Our complete production lines support both custom trial production and stable repeat orders.
Project Case
Medical Front Fork Screw Optimization Case
Why Choose Us
Core Manufacturing & Service Advantages
Stable production, flexible customization and clear order follow-up help you control quality, cost and delivery.
Over 30 years of manufacturing experience and technical knowledge, with practical guidance for product development and production.
More than 80 Taiwan-imported production machines support a monthly capacity of over 150 tons.
Factory advantage: 10,000㎡ self-owned factory, direct manufacturer, cost & lead time controllable.
Quality is controlled from raw material inspection and production to packing and shipment.
6 years of export experience, supporting quotations, samples, documentation, customs clearance and shipping.
We have served over 2,000 companies, including more than 50 customers who have worked with us for over 20 years.
We can support OEM/ODM customized development, new product trial production.
Whole-process order follow-up: update production schedule & QC inspection photos regularly, guarantee on-time delivery and inform any unexpected issues timely. Products with quality issues can be returned and replaced as needed.
Large quantity orders can be customized with packaging and logos as per requirements.
Leading Custom Fastener Manufacturer In China
Shenzhen Justwin Technology Co., Ltd. serves as the exclusive export division of Zhongshan Shenghong Machinery Technology Co., Ltd,which is established in 1993 and is a fastener company that integrates product research and development, sales and services.
Our integrated manufacturing base is equipped with complete production lines, a standardized quality control system and a professional technical team. We adopt unified standards in production management, quality inspection and R&D.
We specialize in the global supply of fasteners, hardware parts and customized mechanical components. Backed by integrated factory operations, we offer genuine factory-direct pricing, consistent and sufficient supply, as well as efficient, standardized one-stop export services.
We strive to deliver high-quality products and thoughtful international trade support for global clients, aiming to establish long-term, stable and win-win partnerships worldwide.
30+ Years of Fastener Manufacturing Experience
With more than 30 years of production and product development experience, we understand the requirements of standard fasteners, special fasteners and OEM projects.
High Quality
Technology
Sustainability
Our complete production lines allow us to arrange both small trial orders and large-volume production.
We support growing companies with flexible custom fastener development and negotiable MOQs based on the product and process.
We inspect each stage from incoming materials and production to surface treatment, packing and shipment.
Production and inspection are managed according to ISO 9001 procedures. Factory inspection reports can be provided, and third-party testing can be arranged when required.
Standard items in stock normally ship within 3–7 days. Rush orders can receive priority scheduling to help meet your shipment plan.
Custom fasteners and molded parts normally ship within 15–30 days, depending on product complexity.
OUR FACTORY
Fastener Manufacturing Facilities
Our 10,000+ m² self-owned factory is equipped with more than 80 production machines, supporting stable production for screws, rivets, pins and custom fasteners.
CUSTOM PRODUCTION PROCESS
From Your Drawing to Finished Fasteners
We manage each step from material inspection and tooling to batch production, testing, plating and final shipment.
01. Raw Material Inspection
02. 3D Product Design
03. Mold Development
04. Sample Approval
05. Mass Production
06. Electroplating
07. Multiple Quality Inspections
08. Salt Spray Testing
09. Packing and Shipping
QUALITY & COMPLIANCE
Certificates and Test Reports for Buyer Review
Relevant quality and compliance documents can be provided based on the product, material, surface finish and destination market.
ISO 9001 Quality Management System
EN 71-3 Material Safety Testing
REACH Chemical Compliance
RoHS Restricted Substance Compliance
Client Testimonial
What that say about Justwintec
Other Questions
FAQs
Yes. We manufacture custom screws, rivets, bolts, nuts, pins and special fasteners based on your drawing or sample.
Small trial orders are available. MOQ depends on the material, size, process and tooling requirements.
Mold development normally takes 7–15 working days.
Minor mold adjustments for sample improvement can usually be made without an additional charge. Major structural changes will be quoted separately.
Common materials include:
- Carbon steel
- 40Cr alloy steel
- Stainless steel SS304 and SS316
- Stainless steel A2 and A4
- Brass
- Aluminum
- Titanium
Other materials can be discussed according to your application.
Available surface treatments include:
- Zinc plating
- Black oxide
- Dacromet
- Nickel plating
- Chrome plating
- Zinc-nickel alloy coating
For zinc-plated products, salt spray resistance can be customized from approximately 48 to 500 hours depending on the coating system and project requirements.
Standard items in stock normally ship within 3–7 days.
Custom molded products normally require 15–30 days after sample confirmation.
Yes. We support OEM-branded packaging, custom logos and neutral export packaging.
Please provide:
- Drawing or sample
- Material
- Surface treatment
- Order quantity
- Required tolerance
- Target standard
The more complete the information, the faster we can provide an accurate quotation.
Yes. We can assist with export documentation, customs clearance and worldwide FCL or LCL shipment arrangements.
Send us a message
Feel Free to Reach Out for Further Details.
Looking for reliable fastener solutions? Justwintec is here to support your project with professional service, fast response, and stable factory supply.