Key Features:Extension Springs With Hook
Miniaturization: Micro tension springs for medical devices and electronics.
High-Temperature Alloys: For extreme environments like engine compartments.
Custom Coatings: Zinc plating or powder coating to enhance wear resistance.
Longevity: Heat-treated for enhanced fatigue resistance, ensuring millions of cycles without failure.
Why Choose Tension Springs with Hooks?Extension Springs With Hook
Versatility: Suitable for both static and dynamic applications, from garage doors to medical devices.
Precision Engineering: Manufactured to exact specifications (ISO 9001 certified) for consistent performance.
Customization:We offer customizable extension springs with adjustable wire diameter, coil count, and hook style to meet your unique application requirements. Our springs are manufactured with precision to ensure reliable performance, durability, and flexibility across a wide range of industries.
Product Description

Material
Carbon Steel
Stainless Steel
Zinc-Plated/Galvanized
Aluminum Alloy

size
Standard sizes range from 0.5mm to 12mm wire diameter, with 10mm to 500mm free length. Custom lengths and coil counts are available.

structure
The spring consists of tightly wound helical coils with integrated hooks at both ends. The pitch (space between coils) and hook angle are precision-engineered to ensure optimal tension distribution and fatigue resistance.

Application Areas
Used in automotive throttle systems, trampolines, industrial machinery, agricultural equipment, and fitness machines. Also found in medical devices, retractable cords, and aerospace mechanisms where controlled tension is critical.
Basic Features
| Product Name | Extension Springs With Hook |
Brand |
Hanyang |
| Product Model | Customized according to your drawing |
Quality |
High Quality |
| Product Material | Stainless steel, Carbon steel |
Supply Capacity |
100000 pieces per month |
|
Packaging |
1. Bulk cartons+ wooden pallets 2. According to customer needs |
Payment Terms |
TT or other payment methods |
|
STANDARD |
ASTM A325 A325m |
Certificate |
ISO9001 |
|
Warranty |
6months |
Thread |
UNC, UNF, M, F |
| CLASS |
Carbon steel:4.8,6.8,8.8,10.9,12.9 Others : Customized |
Specification |
Customized , OEM/ODM, as per client' s drawing or sample |
Our Products

Bolt

Nut

Customised fasteners
Our Services
mechanical equipment
Efficient and precise processing and testing equipment.
Technology Application
An experienced manufacturing company with professional design, R&D and manufacturing teams.
Standardized production
Complete production and processing on time and quickly
Provide customized services
Provide drawings and samples according to customer requirements
Order Management
Smoothly and actively complete customer orders
responsibility
Full supervision and management from product manufacturing to delivery to customers
Our Certificates




Our production and dispatch

20
years
We have been working in the industry since 2015.
34
nations
We have worked with 34 countries on five continents.
27
harbours
We have multiple ports to ship to.
Our address
Gaotanba E-Commerce Industrial Park, Shuifu City, Zhaotong, Yunnan, China
Phone Number
86-15983127791
15983127791@163.com

FAQ
1.Are we a manufacturer or a trading company?
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We are a manufacturer. We have professional pre-sales and after-sales service staff to serve you.
2.What are the shipping methods?
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We can choose DHL, Fedex, UPS, as well as sea or air transportation.
3.What are the payment terms?
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Our payment terms are usually 30% T.T deposit in advance and 70% balance before shipment.
4.Do you provide samples? Are the samples free?
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We generally provide samples for free, but the freight should be paid by the customer.
5.How do you ensure quality control?
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We are responsible for quality control not only of the production line, but also of the entire ready-made order. Each order needs to be inspected in detail before shipment.






























