Extension Spring #78, 11/16"x5-3/4"x.080WG (Drawer 12)

Extension Spring #78

The 18578 Extension Spring #78 is a heavy-duty spring steel extension spring designed to provide dependable tension and return force in mechanical and equipment applications. Manufactured from durable spring steel, this spring offers reliable elasticity and long service life for mechanisms that require controlled stretch and recoil. Its balanced size and wire strength make it suitable for a variety of repair, maintenance, and equipment uses—because when the right spring is in place, everything snaps back the way it should.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: 18578
• Nominal Size: SRM78
• Product Type: Extension spring
• Material: Spring steel
• Outside Diameter: 11/16"
• Body Length: 5-3/4"
• Wire Diameter: 0.081 WG
• Design: Coiled tension spring for extension and return force
• Function: Provides tension and return action in mechanical assemblies

Ideal For

• Equipment repair and mechanical maintenance
• Agricultural and shop equipment mechanisms
• Linkage, latch, and return spring applications
• General-purpose extension spring replacements
• Situations where a strong spring keeps mechanisms snapping back into place instead of staying stretched out.