RS PRO Stainless Steel Extension Spring, 32.9 mm Free Length, 3.6 mm Outside Diameter, 0.4 mm Wire Diameter, 5.44 N 821-403

RS PRO 821-403 stainless steel extension spring offers a robust and corrosion-resistant solution for various mechanical, industrial, and fluid power applications. Crafted from stainless steel material conforming to DIN 17224 No. 1 4310 and BS2056 EN58A specifications, this extension spring ensures performance within stringent standards.

With a free length of 32.9 mm and outside diameter of 3.6 mm, it delivers precise mechanical action. The wire diameter of 0.4 mm supports flexibility and strength. An initial tension force of 5.44 N ensures the spring starts under reliable load conditions, while the spring rate of 0.093 N/mm provides consistent extension characteristics.

The maximum extended length of 87.6 mm allows versatility in mechanical assemblies. The spring’s right hand helix design complies with DIN 2097 (Grade 2) to maintain structural integrity under cyclic stress.

This product adheres to multiple industry standards, including RoHS compliance, DIN 17223, and BS 1408 CR3, ensuring quality and environmental considerations.

The stainless steel construction makes it highly resistant to corrosion, ideal for use in industrial tools, machinery spares, fluid power systems, and mechanical fasteners. It is applicable in settings requiring precise spring action with durability.

Manufactured from stainless steel material conforming to DIN 17224 and BS2056 EN58A standards. Features a free length of 32.9 mm and outside diameter of 3.6 mm. Wire diameter of 0.4 mm for optimal mechanical flexibility.

Initial tension of 5.44 N ensures reliable performance at rest. Spring rate of 0.093 N/mm for consistent extension under load. Compliant with RoHS, DIN 17223, and BS 1408 CR3 standards. Precision right hand helix design as per DIN 2097 (Grade 2).

This RS PRO stainless steel extension spring is a reliable component for industrial fasteners and mechanical machinery spares. It is engineered to provide optimal performance in demanding industrial and fluid power applications. Browse the Industrial Tools & Equipment category at EnvMart for related spring products and accessories.

Explore more products in our Extension Springs category.