Customized Extension Spring

Dimension of Customized Extension Spring. Fastdep.in is a manufacture of customized springs online in India, in a variety of shapes, sizes, and materials, that are used in various applications such as automobiles, aerospace, and consumer products.

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Customized Extension Spring illustration

Extension springs are typically made from round wire that is tightly coiled to form a helical shape. They feature hooks, eyes, or loops at both ends to facilitate attachment to other components. When an external force pulls on the ends of the spring, it extends, storing energy within its coils. Once the force is removed, the spring contracts back to its original length, releasing the stored energy.

To make a extension spring we need some technical parameter like dimensions, material, surface finishing, and special operation.

Fastdep.in Customized Extension Spring Manufacture online in India


Product Name	Extension Spring
Dimensions	D - Wire Diameter SD - Spring Diameter (Inner or Outer Diameter) L - Free Length BL - Body Length G - Gap
Additional Dimensions (Optional)	Hook can be customized as per customer needs, You need to share the cad drawing for accurate production. Refer Additional dimensions
Material & Grade	Spring Steel, Stainless Steel, Brass, etc.,
Surface Finish	Plain, Chrome, Black Oxide, Zinc, Nickel, Powder Coating, etc.,
Minimum Order Quantity	10+ Pcs (MOQ varies based on spring dimensions)

Hook and Loop Types #

The hooks and loops at both ends of extension springs play a crucial role in transmitting force and enabling the spring’s essential functions. These end configurations can be customized in various types to suit specific applications.

Hook/Loop Position Types #

Machine Hooks: The most widely used hook style, offering a strong and direct connection. They are formed by bending ¾ of a coil outwards, providing a robust anchor point for pulling forces.
Side Loops: Also known as cross-over hooks, these are positioned over one side of the spring body, offering a more compact design. They are particularly useful when space is limited or when the spring needs to be offset from its center.
Center Loops: A hook attached to the center of an extension spring. It is commonly used in applications where it is important to maintain a balanced load.
Extended Hooks: These hooks extend further away from the spring body, providing a longer reach and more leverage for pulling forces. They are often used in applications where space is not a constraint and where a stronger pulling action is required.

Extension spring center hook/loop type

Extension spring side hook/loop type

Custom Hook Shapes #

Beyond the standard position types, many different shapes of hooks or loops can be used for extension springs, depending on the design and requirements of the application. Custom hook shapes can be manufactured as per your CAD drawings or samples to meet specific mounting and load requirements.

Additional Dimensions #

Hook can be customized as per customer needs. You need to share the CAD drawing for accurate production.

Order Customized Spring Online in India #

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