RS PRO Steel Extension Spring 69.8 mm Free Length x 16 mm Outside Diameter, 510N Initial Tension 31.8 N/mm Spring 121-387

RS PRO 121-387 Steel Extension Spring is a precision-engineered component made of high tensile steel wire offering exceptional strength and durability. With a free length of 69.8 mm and an outside diameter of 16 mm, this extension spring is designed to deliver a consistent initial tension of 510 Newtons and a spring rate of 31.8 N/mm. The maximum extended length is 83.4 mm, allowing flexibility in mechanical designs requiring load absorption or tension restoration.

The spring's right hand clockwise helix structure ensures secure fastening and reliable action in various industrial applications. It is coated with a dry-to-touch oil finish providing superior corrosion resistance, making it suitable for environments where durability against rust and wear is crucial.

Manufactured under stringent standards BS 1408 CR3 and DIN 17223, and RoHS compliant, this spring is ideal for demanding sectors including automotive engines, domestic and industrial appliances, medical device components, electronic assemblies, and precision measuring instruments. Its robust construction and compliance guarantee superior performance and longevity.

The RS PRO Steel Extension Spring offers dependable load capacity and adaptability for a wide range of mechanical, fluid power, and industrial fastening needs. Made in the United Kingdom, it stands as a high-quality solution for OEMs and maintenance applications.

Constructed from high-strength steel material ensuring durability and performance. Features a free length of 69.8 mm and maximum extended length of 83.4 mm. Outside diameter measures 16 mm with a wire diameter of 3.2 mm.

Initial tension of 510 Newtons provides substantial force for load applications. Spring rate of 31.8 Newtons per millimeter ensures effective tension response. Right hand clockwise helix design for reliable operation. Dry-to-touch oil finish gives added corrosion resistance and longer lifespan.

Manufactured to standards BS 1408 CR3 and DIN 17223 with RoHS compliance. Suitable for automotive engines, appliances, medical devices, electronics, and measuring instruments. Country of origin is United Kingdom ensuring quality manufacturing.

Explore similar RS PRO Extension Springs and other high-quality industrial fasteners and components at EnvMart to meet your heavy-duty mechanical and fluid power requirements.