Custom Helical Torsion Spring 0.5mm Carbon Steel Compact Size For Small Pop-up Plastic Cover

Product Description

We are a professional custom spring manufacturer specializing in precision Springs for industrial and electronic applications. This Helical Torsion Spring is crafted from high-quality carbon steel with a 0.5mm wire diameter, featuring a compact helical (spiral) structure, two integrated force arms, and overall dimensions of 9mm (L) * 6mm (W) * 3.3mm (H). It undergoes professional black oxide surface treatment to enhance corrosion resistance, reduce friction, and extend service life, specifically designed to provide stable torsion force for small pop-up plastic covers.

Specification

Applications

This custom helical torsion spring is primarily designed for small pop-up plastic covers and widely applied in various industries, including: Electronic Devices (small sensor covers, USB port covers, memory card slots, portable device battery covers), Medical Equipment (miniature instrument protective covers, small diagnostic tool enclosures), Automotive Interior Parts (small plastic trim covers, dashboard button covers, door panel small covers), Household Appliances (miniature switch covers, small storage box lids, portable appliance covers), Precision Instruments (small access covers, instrument panel covers), and Consumer Electronics (wearable device covers, small electronic accessories). It is also suitable for other small-sized applications requiring stable torsion force, compact structure, and reliable performance, such as small toys, precision hardware accessories, and miniature electronic components. As a professional manufacturer, we can customize the spring to fit specific application scenarios, ensuring perfect compatibility with your products.

Custom Services

As a professional custom Helical Torsion Spring manufacturer, we provide one-stop OEM and custom service to meet all your personalized requirements. Our core custom capabilities include:

• Material Customization: Carbon steel, stainless steel (304/316), copper alloy, and other metal materials to match different environmental and performance needs.
• Specification Customization: Wire diameter (0.1mm-5.0mm), overall size, number of coils, Force Arm length/angle, and torsion force (customized according to your load and stroke requirements).
• Surface Treatment Customization: Black Oxide, zinc plating, nickel plating, and other treatments to enhance corrosion resistance and appearance.
• Small-Batch & Mass Production: We accept small-batch prototype orders (minimum 100 pieces) for product testing and large-volume mass production for formal assembly. Our professional engineering team provides technical support, optimizing product design to improve performance and reduce costs. We also offer drawing optimization services to ensure the spring is perfectly suited for your application.

Custom Cooperation Process

1. Inquiry: Provide your specific requirements, including drawings, samples, wire diameter, material, size, torsion force, surface treatment, quantity, and delivery time.
2. Technical Evaluation: Our engineering team evaluates the feasibility of your custom design, optimizes the production process, confirms torsion force and fatigue life parameters, and provides professional suggestions.
3. Quotation: Issue an official quotation with a detailed production plan, lead time, cost breakdown, and quality commitment.
4. Prototype Production: Produce 3-5 custom prototypes according to your requirements for your confirmation of size, performance, appearance, and torsion force.
5. Sample Approval: Modify and adjust the prototype based on your feedback until it fully meets your specifications.
6. Mass Production: Start formal mass production after sample approval, with real-time production progress feedback to keep you informed.
7. Quality Inspection: Conduct 100% full inspection of finished products to ensure they meet custom specifications and industry quality standards.
8. Packaging & Shipment: Use anti-rust, shock-proof packaging to protect the springs during transportation; arrange shipment according to the agreed logistics method and provide tracking information.
9. After-Sales Service: Provide technical support and after-sales consultation for any product quality issues; offer rework or replacement for unqualified products (per our quality guarantee policy).

Product Advantages

• Professional Expertise: As a dedicated custom helical torsion spring manufacturer, we have rich experience in OEM and custom service, focusing on precision small-sized torsion springs.
• High Precision: Equipped with advanced CNC spring coiling machines, ensuring wire diameter tolerance ±0.03mm, dimensional accuracy ±0.1mm, and torsion force accuracy ±5%—consistent performance across all products.
• High-Quality Material: Selected carbon steel with excellent toughness and fatigue resistance, ensuring a long service life (≥100,000 cycles) and no deformation after repeated use.
• Professional Surface Treatment: Black oxide process forms a dense protective film, enhancing corrosion resistance and wear resistance, preventing rust, and extending product service life in various environments.
• Compact & Practical Design: Small size (9mm*6mm*3.3mm) fits perfectly with small pop-up plastic covers, saving installation space and ensuring smooth operation.
• Flexible Customization: Fully customizable in all aspects (size, material, torsion force, Force Arm design, surface treatment) to match your unique application scenarios.
• Strict Quality Control: Full-process inspection from raw materials to finished products, eliminating unqualified products and ensuring stable quality.
• Cost-Effective & Efficient: Factory-direct pricing for competitive costs; short lead time (3-7 days for prototypes, 7-15 days for mass production) to meet your delivery needs.

Quality Control

As a reliable custom Spring manufacturer, we implement strict quality control throughout the entire production process to ensure product precision, reliability, and consistency.

1. Raw Material Inspection: Test incoming carbon steel wire for diameter, tensile strength, toughness, and purity to ensure it meets production standards; reject any unqualified raw materials.
2. Production Process Control: Calibrate CNC spring coiling machines daily to ensure precision; monitor heat treatment temperature and time to enhance material toughness; strictly control the Black Oxide surface treatment process to ensure uniform coating, no peeling, and excellent corrosion resistance.
3. Precision Inspection: Use precision calipers, micrometers, torsion testers, and fatigue testing machines to inspect dimensional accuracy, torsion force, Force Arm parallelism, and fatigue life of each product.
4. Finished Product Inspection: Conduct 100% visual inspection for surface defects (scratches, rust, uneven coating) and functional testing to ensure no deformation, no breakage, and stable performance.
5. Packaging Inspection: Check packaging for anti-rust and shock-proof performance to avoid product damage during transportation. All products comply with international industrial quality standards and your custom requirements, with a quality guarantee period of 12 months.

FAQ (Frequently Asked Questions)