Extension Spring #43, 3/16"x3-9/16"x.023WG

Extension Spring #43, 3/16"x3-9/16"x.023WG

A long, light-duty extension spring designed for controlled tension and smooth return, the 18543 Extension Spring (#43) is constructed from durable spring steel to provide consistent stretching performance in small mechanical assemblies and repair applications. With a 3/16" diameter and 3-9/16" length, this spring offers extended travel while maintaining dependable rebound. It’s built to stretch and return repeatedly—because even the smallest springs have an important job keeping things moving properly.

Country of Origin
Varies by production batch

Key Features / Specifications

• Part Number: 18543
• Nominal Size: SRM43
• Product Type: Extension Spring
• Material: Spring Steel
• Diameter: 3/16"
• Length: 3-9/16"
• Wire Diameter: .023 WG
• Designed for light-duty tension and return applications
• Durable spring steel construction for repeated stretching cycles
• Suitable for small mechanical assemblies, repairs, and general hardware use

Ideal For

• Light mechanical assemblies requiring tension springs
• Equipment maintenance and spring replacement
• Shop and hardware repair projects
• Applications needing extended stretch and reliable rebound (because when a small spring stops doing its job, the whole mechanism tends to notice)