Extension Spring #66, 7/16"x5"x.047WG

Extension Spring #66

The 18566 Extension Spring #66 is a compact tension spring designed to provide reliable pulling force in mechanical assemblies and equipment repairs. Manufactured from high-strength spring steel, this extension spring delivers consistent tension and dependable return action for mechanisms requiring controlled extension and recoil. With a 7/16" diameter, 5" length, and 0.051 wire diameter, it offers dependable performance for light-duty mechanical applications—because when a spring does its job properly, everything connected to it tends to behave better.

Country of Origin
Varies by production batch

Key Features / Specifications

• Part Number: 18566
• Nominal Size: SRM66
• Product Type: Extension spring
• Material: Spring Steel
• Spring Diameter: 7/16"
• Length: 5"
• Wire Diameter: 0.051 WG
• Function: Provides tension and return force in mechanical assemblies
• Design: Coiled spring for controlled extension and recoil

Ideal For

• Mechanical linkages and return mechanisms
• Agricultural equipment and machinery repairs
• Shop-built devices and equipment assemblies
• Replacement of worn or broken tension springs
• Anyone who knows that a dependable spring quietly keeps everything pulling in the right direction