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Selecting the correct mechanical extension springs is crucial for ensuring the optimal performance and longevity of various mechanical assemblies. These components play a vital role in absorbing shock, providing tension, and enabling smooth operation. Understanding their specifications and applications will help you make an informed purchase.
The 133-piece extension spring kit includes 18 extension springs of different sizes, and presents a beautiful storage box made of spring, which can be used for a long time.
The18 extension spring sizes...
Features: the tensile spring has high ductility, good tensile strength, smooth, firm and flexible surface.
Usage: tension spring is suitable for all kinds of repairs and maintenance of automobiles, hand tools, replacement parts, tools and equipment.
Tips: the tension spring is of fine workmanship. If you have any questions when using the product, please contact us in time and we will deal with them as soon as possible.
♛【What You Get】: Our stainless steel extension springs kits include 15 different sizes total for 96pcs. All extension springs are neatly packaged in individual packages and labeled with the appropriate size, so you can quickly pick the right spring.
♛【Premium Material】: Our spring assortment kits are made of high quality stainless steel material that is rust and corrosion resistant. With smooth and sting-free surface, it has good fatigue strength and high ductility.
♛【Designed with Hook Ends】: Our high quality stainless steel extension springs with dual hooks are simple and easy to use and secure. Ideal for a variety of applications. Their durable construction ensures optimal retraction and their smooth surface...
♛【Wide Applications】: Extension springs are suitable for repair and maintenance of various automobiles, hand tools, replacement parts, tools and equipment. For example, curtains, automobiles, bicycles, mechanical equipment, umbrellas, water bottles...
【25 Different Sizes, 100 Pieces Extension Spring Assortment Kit】Our spring assortment kit includes 25 different sizes, each sizes has 4Pcs, and total 100pcs in box.
【Each Sizes Extension Spring Steel Come with Individual Package】Size :【A×B×C】A is Wire diameter, B is Outer diameter, C is Free length：
【Easy to Storage Mechanical Extension Springs】 All theExtension springs are neatly packed in individual Package with corresponding size label, you could pick up the suitable one quickly.
【Fit Most Use Spring Set】Extension Spring kit has 30 different Kinds of size springs which you may choose for home repairs.
Product Information: Part Number 9617, Small Spring, Extension Spring, Dimensions: 2.64 inches × 0.75 inches × 0.6 inches. Your purchase includes 4 brand new 9617 small springs with hook ends for use and backup.
Product Function: 9617 extension springs, through its elastic properties, take on the key functions of resetting, cushioning, clamping, energy storage and other key functions in various applications, which are the key parts to ensure the normal operation...
Suitable for a variety of applications: YRZHKS 9617 spring is suitable for electrical appliances, automobiles, ships, toys, tools, machinery, equipment, devices and so on. This spring is not a generic item, please check its compatibility before purchase
Premium Quality Material: small springs are made of durable spring steel (tempered wire) with attractive, corrosion-resistant, nickel-plated surfaces for indoor and outdoor use, provide optimal retraction when extended, and are designed to be used in a...
Easy to use: the springs are very easy to install, suitable for all DIY enthusiasts, saving you time and money
After-sales service: your satisfaction is our pursuit, if you have any questions about YRZHKS 9617 spring, welcome to contact our professional team, we will ensure your shopping experience
Mark every size: These springs in each grid has a corresponding size mark, which is convenient for you to pick and place.
Easy storage: These Extension Spring are neatly packed in a clean, transparent box.
304 Stainless steel : which can not rust in humid environment and have strong oxidation resistance, acid resistance and corrosion resistance.
Fit most use: We always care which size you really need. We choose 5 popular sizes which you may most need from hundreds sizes. 5 Different size: The first one is wire diameter, second is outer diameter, 3rd is overall length. 【 9/64 x 1/4 x 13/32 inch...
Most Cost-effective：We hope the 60pcs small Extension Spring kit in the box is most Cost-effective method . We hope these springs are really nice collection to have on hand for most repair project, such as doors, curtain, automobiles, Watering can...
Size Information: the outside diameter of the 1 inch/ 2.54 cm compression spring is 1/4 inch/ 0.64 cm, the length is 1-1/2 inch/ 3.81 cm and the wire diameter is 0.035 inch/ 0.089 cm, proper size to use; Please check the size before ordering
Sufficient Extension Spring: the package contains 10 pieces of springs 1 inch, adequate quantity to meet your daily needs and replacements
Quality and Sturdy: the spring extension is made of quality stainless steel material, which is sturdy and strong, featuring good elasticity, flexible and long lasting
Convenient Design: the extension spring is designed with 2 openings that you can use and fix it easily and conveniently
Versatile Applications: the 1/4 inch x 1-1/2 inch extension spring can be widely applied for appliances, marine, toys, automotive, tools, contraptions, mechanical devices and so on
Versatile extension springs: Our high-quality stainless steel extension springs with hook ends are perfect for various applications. The durable construction ensures optimal retraction, while the smooth surface guarantees long-lasting performance
Enough for every neeed: This small springs with hook ends is available in 50-pack SP9600 small springs to meet a variety of needs. These extension spring are versatile and reliable for repair and maintenance tasks
Easy to use: The small spring is designed with 2 opening hook ends that you can use and fix it easily and conveniently
Product specifications: Small tension spring measuring 1/4 inch x 1-1/2 inch, wire diameter 0.035 inch, made of high quality stainless steel material, rustproof, corrosion-resistant
Wide range of applications: Stainless steel mechanical extension springs can be used for indoor, curtains, automobiles, bicycles, mechanical equipment, umbrellas, kettles, razors, tape recorders, repairing toys, pliers, electrical appliances and so on
Versatile Industrial Grade Spring: Designed for use in appliances, automobiles, boats, toys, tools, machinery, devices, and diverse equipment requiring reliable tension
Easy Replacement with Included Tool: Excellent pliability facilitates simple installation; the INCLUDED spring expansion tool ensures effortless removal and replacement of damaged springs
Optimized Performance & Durability: Crafted from premium spring steel for optimal retraction and tension consistency. Features corrosion-resistant coating for reliable indoor/outdoor operation and extended service life
High-Quality Construction: Made from durable spring steel for superior elasticity and maximum force retraction during stretching
Set includes TWO (2) units of Model 540183#61 Tension Springs
【Precise Size for Exact Fit】Wire Diameter: 0.03 inch (0.8mm); Outer Diameter: 0.24 inch (6mm); Free Length: 1 inch (25mm). Please measure your original spring's wire thickness and outer diameter before ordering to ensure a perfect fit for your...
【Heavy Duty Stainless Steel】Made of high-quality 304 stainless steel. Offers excellent rust resistance and corrosion protection, ensuring long service life even in humid environments. The dual hook ends are firmly closed to prevent deformation under...
【Consistent Tension & Elasticity】These extension springs provide smooth and consistent pull force. No sudden deformation or loss of tension after repeated stretching, ideal for applications requiring reliable return force.
【Wide Application Scenarios】Perfect for DIY projects, garage door repair, trampoline parts, toy guns, carburetor return, latch mechanisms, furniture assembly, and 3D printer maintenance.
【15-Piece Value Pack】These 15 springs come in a sturdy plastic box, keeping them organized, protected, and easy to retrieve. A thoughtful addition to your tool collection.
Last update on 2026-07-16 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Mechanical Extension Springs
Comparison Tips
When comparing extension springs, focus on the specifications that directly relate to your application's needs. Pay close attention to wire diameter, overall length, and the type of end loops. Compare the material's suitability for the operating environment, considering factors like temperature and humidity. Always verify the spring's load rating at the desired extension to ensure it meets your performance criteria. Check for any protective coatings that enhance durability.
Frequently Asked Questions
What is the primary function of an extension spring?
The primary function of an extension spring is to absorb energy and resist tensile or pulling forces. They are designed to extend under load and return to their original position when the force is removed.
How do I determine the correct spring rate?
The spring rate is typically calculated based on the spring's material, wire diameter, mean coil diameter, and the number of active coils. You can also find this information in the manufacturer's specifications or determine it through testing.
What is the difference between a hook end and a loop end?
Hook ends and loop ends are types of attachments for extension springs. Hook ends typically have a more pronounced curve at the ends for attachment, while loop ends are more integrated into the spring's coils, forming a closed circle.
Can extension springs be used in high-temperature environments?
Yes, but it depends on the material. While standard steel springs may lose their properties at high temperatures, springs made from specialized alloys like Inconel or stainless steel can withstand elevated temperatures.
How does wire diameter affect spring performance?
A larger wire diameter generally results in a stiffer spring with a higher spring rate and greater load-carrying capacity. It also contributes to increased durability and resistance to breakage.
What does 'free length' mean for an extension spring?
The 'free length' refers to the total length of the extension spring when it is not under any load or tension. This measurement is crucial for ensuring proper fit and function within a mechanical assembly.
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