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Planetspring.com is the largest online spring marketplace. All the products you see below can be found using Planetspring.com. Planetspring.com offers you the opportunity to get the springs you need at better prices by uniting buyers and suppliers.

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Most Popular Springs
Compression Spring
Compression springs are made of an elastic wire material formed into the shape of a helix (which is why they are also called helical springs), which returns to its natural length when unloaded. Compression springs can be commonly referred to as a coil spring or a helical spring. Coil springs are a mechanical device which is typically used to store energy and subsequently release it to absorb shock, or to maintain a force between contacting surfaces.

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Conical Compression Spring
Conical Compression springs are similar to compression springs and can be used for the same applications. The advantage with conical springs however, is that the coils can telescope into each other for a shorter coil bind height.







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Torsion Spring /
Double Torsion Spring

Torsion springs are helical wound springs made to generate rotational and torsional forces. A torsion spring applies force through a twisting motion to move or return a part or component. In particular, the more one twists the spring, the more force it takes to twist it further. With double torsion springs one can have clockwise and counterclockwise rotational forces in one spring.


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Extension Spring, Extended Length Extension Spring
Extension springs, commonly called tension springs, are helically wound coils, wrapped tightly together to create tension. Extension springs usually have hooks, loops, or end coils that are pulled out and formed from each end of the body. The function of a tension spring is to provide extended force when the spring is pulled apart from its original length.




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Barrel Spring
Barrel springs, are specialized varieties of the conventional helical compression spring. Variable diameters act in the same way as variable pitch to promote consecutive coiling closing.










Extended Length Coil Spring
Extended length coil springs are used as pipe cleaners. Pipe cleaners are extension springs without hooks. On pipe cleaners, the coils are tightly wound together to give initial tension, and its long length allows it to make its way through the maze of the pipe it is unclogging. The extension spring is turned clockwise so that it acts like a screw threading itself into the clog. Once the pipe cleaner is imbedded into the mass it works at tearing it apart, thus unclogging the drain.


Drawbar Spring
Drawbar springs are used in potential overload situations and offer a built-in safety feature that, upon fracturing, will continue to carry a static load. In a drawbar spring, the load is applied at the ends of long steel loops which pass through the spring's center and are hooked around the opposite end, thus compressing the spring upon loading. A common application of the drawbar spring is the spring used when supporting a porchswing.


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Magazine Spring
Magazine springs are a type of compression spring. They are made rectangular in shape instead of circular like compression springs. Magazine springs are precision springs for firearms. Magazine springs are designed for a particular gun application.








Spring Pins
Spring Pin
A slotted spring pin is a headless hollow cylindrical tube having a longitudinal slot down the entire length with chamfered or round ends to aid installation. Slotted spring pins are produced to a controlled outside diameter slightly greater than the hole in which it will be installed. Compressed as it is installed, the spring pin applies continuous pressure towards the sides of the hole wall. The pressure provides tension in a radial manner to prevent loosening created by vibration or shock.

Cotter Pins
A cotter pin (also known as a cotter key or a split pin) is a metal fastener with two tines that are bent during installation, similar to a staple or rivet. Typically made of wire with a half-circular cross section, cotter pins come in multiples.








Automotive Springs
Air Spring
Air springs are a mechanical device using confined air to absorb the shock of motion.





Auto Coil Springs
A section of spring steel rod wound in a spiral pattern or shape. Car coil springs are widely used in both front and rear suspension systems. These coils cushion and absorb the shocks and bumps as the vehicle is driven.


Gas Springs
A gas spring is a type of spring that uses compressed gas contained in a cylinder and variably compressed by a piston, to exert a force. Adjustable gas springs can be found in multiple applications.


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Leaf Spring
Leaf springs are a suspension spring made up of several thin, curved, hardened-steel or composite-material plates attached at the ends to the vehicle underbody.


Torsion Bar
Torsion Bars are a long straight steel bar fastened to the chassis at one end and to a suspension part at the other which when twisted provides the spring force.


Bed Springs
Inner Spring
Modern spring mattress cores, often called "innersprings," are made up of steel coil springs, or "coils."


Box Spring
A bedspring that consists of spiral springs attached to a foundation and enclosed in a cloth-covered frame.


Cantilever
Round Wire, Squared, or Shaped
A cantilever spring is a flat spring supported at one end and holding a load at or near the other end.

Die Springs
Coiled
A die spring is helical compression spring that is made from rectangular wire. For the same deflection, they can carry roughly 30% more load than compression springs that use round wire.


Polyurethane Springs
Polyurethane springs exceed the capacity of coiled springs in generated forces and strokes in a similar space. Its volume remains constant under force but changes shape, similar to a solid fluid with a memory.

Garage Door Springs
Garage Door Extension Spring
Garage door extension springs are springs used to carry the weight of a garage door as it lifts. They stretch on either side of the door, thus relieving the weight of the garage door.


Garage Door Torsion Spring
Torsion springs aid in raising and lowering a garage door. They're mounted above the door, and are loosened and tightened by the cables as they wind around the drum when the door is opened and closed.


Garter Springs
Long and Short 
A garter spring is a coil spring inserted end-onto-end to provide a clamping force around an object. Often used to maintain the function of radial shaft seals by keeping the elastomer seals tight against the rotating shaft.


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Micro Springs
Compression, Extension, Torsion, Double Torsion
Micro springs are usually very small compression, extension, or torsion springs used in medical devices and compact electronic controls.


Power / Clock Springs / Constant Force
Power Spring
Power Springs provide rotational energy from either the arbor or the case, or linear motion with the use of a pulley or cable. Power springs are flat springs, meaning they are made of flat spring steel.
A clock spring and Constant Force Springs offer high force output with very small space requirements, clock springs provide long linear reach with minimal force buildup, and store power indefinitely when extended.
Volute Spring
A Volute spring is a compression spring in the form of a cone (a Volute), designed so that under compression the coils are not forced against each other, thus compressing the length making it shorter.






Rings
Flat Wire
Wire Rings are circular rings made out of round or shaped wire. Typical applications include key-rings, hose clamps, o-ring seals, chain mail and many more uses.


Round Wire
Wire Rings are circular rings made out of round or shaped wire. Typical applications include key-rings which are usually stainless round wire rings, hose clamps, o-ring seals, chain mail and many more uses.

Micro Rings
Wire Rings are circular rings made out of round or shaped wire. Typical applications include key-rings, hose clamps, o-ring seals, chain mail and many more uses.


Split Wire Rings
Wire Rings are circular rings made out of round or shaped wire. Typical applications include key-rings, hose clamps, o-ring seals, chain mail and many more uses.


Rubber Springs
Urethane Compression Springs
Urethane compression springs have been designed for special applications where steel-wire springs are not well suited, including environments where corrosion, vibration, and magnetism are present. Urethane compression springs also have proven to be the safest, most efficient and reliable compression material for punching, stamping and drawing dies.

Bungee Cord
A bungee cord is an elastic cord composed of one or more elastic strands forming a core, covered in a woven sheath usually of nylon or cotton. Bungee cords are most often used to secure objects without tying knots and to absorb shock. More recently, specialized bungee jumping cords are made entirely of elastic strands.


Spring Washers
Belleville Washer
Disc springs and conical shaped washers are Belleville washers, designed to be loaded in one axial direction only. They can be statically loaded, either continuously or intermittently, or cyclically deflected i.e. dynamically loaded. Infinitely variable spring characteristics can be achieved by the arrangement of disc springs into stacked columns.







Curved or Wave Washers
A wave washer is a wavy metal washer designed to offer a compensating spring force and maintain a load or take up shock. These are the discs of irregular shape formed in such a way that when loaded it deflects, acts like a spring, and provides a preload between two surfaces. Wave washers are very useful for limited radial space and moderate thrust load e.g. axial loading of ball bearing.






Clover Dome 
The clover dome is formed into a clover disk. The dome-shape permits coil spring replacement in space-constrained applications, and provides a lower spring rate with more defection than Belleville washers. Spring function depends on the deflection of three equally spaced disk segments that minimize stress under compression, and are connected by the outer rim portions of the disk. The clover dome reportedly enhances compression control in nut-and-bolt assemblies, and reduces torque-control requirements for gasket installations.


Serrated Disc    
Serrated Washers are Disc Springs with Trapezoidal Cross Section on both sides for gripping. Serrated safety washers are ready to fit washers to sustain preload and avoid loosening. As the bolt is tightened the serrations crunch into the mating faces and prevents the screw from loosening up due to vibration. Also, the disc shape holds the necessary tension.


Slotted Disc
They are conical washers that can be subjected to loads in the axial direction. Disc springs produce small deflection against relatively high forces, which utilize limited space. Disc springs can be designed to achieve required load characteristics.





Wave Spring
Wave Spring
Compact wave springs save space and provide more precise load deflection characteristics. This allows engineers to design smaller assemblies with lower free lengths and /or lower operating heights - sometimes by as much as 50%while improving deflection characteristics.



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Wire Forms
Wire Forms
A wire form, often called metal spring clips can produce tensional and torsional movement. Wire forms can be made into virtually any shape desired. Some applications include s-hooks, j-hooks and clips.

Wire / Strip
Spring Wire/Shaped Spring Wire
Spring wire is usually made from alloys of steel. The most common spring steels are music wire, oil tempered wire, chrome silicon, chrome vanadium, and 302 and 17-7 stainless. Other materials can also be formed into Spring wire, depending on the characteristics needed. Some of the more common of these exotic metals include Beryllium Copper, Phosphor Bronze, Inconel, Monel, and Titanium. The following table summarizes the more important properties of each material.


Metal Strip  
Metal strip is narrow, thin stock that is usually 3/16 in. (4.76 mm) or less in thickness and under 24 in. (609.6 mm) in width. Metal strips are formed to precise thickness and/or width requirements. Hardness or surface finish properties are controlled by the rolling process, which is usually unidirectional.







Stampings
Stampings    
Stamping is a metal stamping process by which sheet metal strips are punched using a press tool using a stamping die which is loaded on a machine press or stamping press to form the sheet into a desired shape. This could be a single stage operation where every stroke of the press produce the desired form on the sheet metal part, or could occur through a series of stages. Stampings can be made out of many different shapes and sizes offering you a world of options.