Adjustable Miniature Torsion Coil Spring For Gate Door Knob

Basic Information
Place of Origin: China
Brand Name: HEZHI
Certification: Rohs&Reach
Model Number: N/A
Minimum Order Quantity: 1000pcs
Price: $0.1 - $0.5USD/ Piece/Pieces
Packaging Details: PE Bag with Carton Box
Delivery Time: 7-15 work days
Payment Terms: T/T, L/C
Supply Ability: 10,000,000 Piece/Pieces per Month According to the order
Detail Information
Product Name: Hardware Industry Steel Adjustable Small Flexible High Quality Torsion Metal Spring Application: Hardware ,Furniture, Industrial, Auto, Car ,Toy And More
Style: Coil, Spiral Usage: Automobile;Auto;Car
Wire Diameter: As Requirement Material: Steel, Stainless Steel, Carbon Steel ,Paino Wire, Alloy Or As Required
Finish: Chrome Plate.White Zinc Plating, Color Zinc Plating Color: White, Black, Silver Or As Required
Oem: Can Customized Scope Of Business: Springs And Stamping Parts
High Light:

Adjustable Torsion Coil Spring


Miniature Torsion Coil Spring


Miniature Door Knob Spring

Product Description

Hardware Industry Steel Adjustable Small Flexible High Quality Torsion Metal Spring



It is one of the more complicated design principles among all the categories of spring. There are many types of changes, so the theory involved in the design is the most complicated

(1) Free length.
(2) control diameter :(a) outer diameter, (b) inner diameter, (c) inner diameter of the casing, or (d) outer diameter of the round rod through.
(3) Wire size "wire diameter".
(4) Materials (type and grade).
(5) number of turns :(a) total number of turns and (b) right or left.
(6) Torsion force: the number of pounds deflected to a certain Angle.
(7) Maximum deflection (Angle calculated from free position).
(8) Terminal form.
Please specify material diameter (D), outer diameter (D), length of torsion arm (L), free height (Lo), and other geometric dimensions such as guiding moment (T 1 T 2...... T, j, and the corresponding and the corresponding torsion angles

Material Stainless Steel (SUS304,301.316,310,201,631, ect)
Paino/Music Steel
Carbon Steel or as your requirments
Iron etc
Finished Electroplating Zinc ,Nickel ,copper ,black and so on
Heating In different tempurture
Cleanning Passivation,Clean,Rust-Proof
Process CNC Machine, Digital control multi-function computer spring coiling machine, mechanical automatic spring coiling machine, spring grinding machine, heat treatment equipment, large hot spring coiling production line, quality testing instrument.
Application It is widely used in computer, electronics, home appliances, cameras, instruments, doors, motorcycles, harvesters, automobiles, and other industries to control the movement of machine parts, ease impact or vibration, storage energy, measure the size of force and so on!
Wire dia Range 0.05-20mm
Design. According to customer's drawing or sample
Packaging PE Bag+carton Box, inner plastic bags and outer carton


JIS, DIN, ANSI, EN, etc.




















Adjustable Miniature Torsion Coil Spring For Gate Door Knob 0

Material Type Model number Characteristic Application
Stainless Steel (SUS) With or without magnetism shine or nitrided surface, dark surface 201, 202 etc. Less nickel plated, could not proceed salt spray test General using craft and toys
301, 302, 303, 304, 305, 310, 316, 321 High temperature resistance Electronic part, home appliance, Locks, toys or can be used in all kinds of products.
410, 420, 430 etc. High strength OEM aments and tableware products
630, 631 etc. High heat stability Electrical application or product use under high temperature
Carbon Steel (SWC) Low carbon steel, high carbon steel, nickel plated steel, Galvanized wire 55CrSi, 60SizMNA, 60SizCRVA

Good elasticity

high hardness

Electronic part, home appliance, Locks, toys or can be used in all kinds of products.
Piano Steel (SWP)   SWP-A, SWP-B High tensile resistance, and long worklife Application for all kinds of small products
Copper Wire Phosph or copper wire( C519R), Nickel plated copper, Bronze   Good conductivity of electrical Electronics, electrical applicance, like antenna
Iron Galvanize iron wire Customized or normal material Soft material Craft spring, decoration wire
Production Detail

Adjustable Miniature Torsion Coil Spring For Gate Door Knob 1


Reference Drawing

Adjustable Miniature Torsion Coil Spring For Gate Door Knob 2



Company Profile


Dongguan Hezhi Hardware Co., Ltd. is located in Dongkeng Town, Dongguan City, Guangdong Province, China. We are a worldwide import and export trading company.We belong to a group of companies established in the early 20th century.Our company is a spring factory specializing in R&D design, amnufacturer and sales, introduced equipment technology and hired senior engineers with more ten years of experience to highly cooperate with various customized ODM and OEM products.

Our company is a hardware factory specializing in R&D design, manufacture and sales of precision components. The company introduces advanced equipment and production technology from Taiwan and abroad, adopts CNC high-precision computer machine, compression spring machine and other mechanical equipment, and employs senior engineers with more than ten years of work experience to debug mechanical equipment and customize production.
As a very active manufacturers, we develop new designs nearly every month, if you have interest in it, it's my pleasure to offer.

Slogan:“The testimony is pragmatic and the attitude of the people. Quality service is the pursuit of the people!

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HeZhi in Vietnam

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Our Service
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Pre-Sales Service

* Inquiry and consulting support.
* Sample testing support.
* View our Factory.

After-Sales Service

* Training how to instal the machine, training how to use the machine.
* Engineers available to service machinery overseas.

Packing & Delivery
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1. Are you a factory or a trading company?

We are the manufacturer of the hardware. We can provide OEM service and also provide samples for testing. Last but
not least, we produce not only rivet nut column, but aslo al kinds of springs.


2. Small order quantity is workable

From the initial sample design of the spring to the mass production of the springs, we can quickly reach your manufacturing goals and immediately provide the best products because we have an excellent production management system and expertly trained technical personnel.
3. Committed to high quality production
To keep HeZhi Springs at the forefront of the industry, we have implemented a stringent internal quality control system and regularly import the latest manufacturing equipment and instruments. Through our precise manufacturing technology and expert mold making process, we provide our customers with the best products and service.
4. Efficiency in manufacturing
Our company's machinery and equipment are controlled by CNC computers. In order to respond to international needs and standards, we continuously update and upgrade our equipment every year. Our machines effectively increase production capacity and save on manufacturing costs. The manufacturing department is the most important core of the whole company and by treating it with utmost importance, we reap great benefits in manufacturing efficiency.
5. Excellent customization services
HeZhi's R&D team designs and completes customized products according to the needs of customers. From the selection of materials to the function of the products, we can design and develop products to suite different customers' requirements. We are constantly involving ourselves in all aspects of the industry because only by having a complete view and analysis of the industry, can there be innovative breakthroughs.

6. Payment term
*T/T : 30% pre T/T, 70% before delivery.
*Trade Assurance

7. Service
*Delivery on time.
*Shipped by a convenient and cost-effective way.
*Good after-selling, 24 hours service for you.

8. Packing
*A: Poly bag, Plstic tray ,small box, carton.
*B: According to customers' requirements.

9. Delivery
*Sample: 7-10 days after deposit received.
*Batch goods: 12-15 days after samples approved.

10. Do you provide samples? Is it free or extra?
We can provide free samples when we have them in stock, but you have to pay the freight.

11. What shipping ways our use?
We will use UPS, DHL or TNT to ship the products. If your goods are very heavy or bulky, we will choose sea transportation.


Contact Details

Phone Number : 18379949013

WhatsApp : +8618379949013