RS PRO Steel Extension Spring, 77.8 mm Free Length x 13 mm Outside Diameter, Wire Diameter 2.5 mm, Initial Tension 121-359

RS PRO 121-359 Steel Extension Spring is a high-quality mechanical component manufactured from robust high tensile strength piano/music wire. It features a free length of 77.8 mm and an outside diameter of 13 mm, with a wire diameter of 2.5 mm. This spring provides an initial tension of 317N and a spring rate of 13.7 N/mm, ensuring effective resistance to pulling forces and energy storage.

The spring is designed with a right-hand helix and looped ends, enabling attachment at both ends for diverse industrial applications. Its oiled finish provides corrosion resistance, making it suitable for long-term performance in demanding environments.

Conforming to RoHS directives, DIN 17223, and BS 1408 CR3 standards, this extension spring is crafted for reliability and consistent mechanical operation. The spring dimensions adhere to DIN2097 Grade 2 specifications, ensuring compatibility with a wide range of mechanical assemblies.

Typical applications include automotive interiors and exteriors, garage door assemblies, vise-grip pliers, carburetors, trampolines, washing devices, and farm machinery installations. Its resilient design supports absorption and release of mechanical energy effectively while providing resistance to extension forces.

Manufactured from high tensile strength steel material for durability. Free length measures 77.8 mm, suitable for precise applications. Outside diameter is 13 mm ensuring compatibility with various assemblies. Wire diameter is 2.5 mm providing strong resistance to pulling forces.

Initial tension is 317N, tailored for energy absorption and release. Spring rate of 13.7 N/mm offers consistent performance under load. Compliant with RoHS, DIN 17223, and BS 1408 CR3 standards for quality assurance. Oiled finish and looped ends allow for versatile mechanical fastenings.

Suitable for automotive, garage door assemblies, washing devices, farm machinery, and other industrial uses.

This RS PRO extension spring is an essential component in mechanical systems requiring precise tension and energy absorption characteristics. Explore more high-quality mechanical fasteners and springs at EnvMart for reliable industrial solutions.

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