Gardner Spring 36437G Precision Compression Spring

Product Description

The GARDNER SPRING 36437G is a precision compression spring manufactured from music wire (AISI 302 / ASTM A228 / ASTM A313) with a plain silver finish. It features a 0.42-inch outside diameter, a 2-inch free length, and a 0.0382-inch wire diameter. The spring delivers a 5.2 lb/in spring rate and supports a maximum work load of 7.0 pounds. Closed and ground ends provide stable seating and consistent load transfer under compression. This part is specified where tight dimensional tolerances and repeatable force characteristics are required. Mechanical engineers, maintenance technicians, and precision assembly professionals work with this component in production and service applications.

This compression spring is suited for use in light-to-medium duty mechanical assemblies across HVAC equipment, fluid control valves, pumps, and industrial mechanisms where a compact spring with controlled deflection is needed. Its 0.42-inch OD fits into a hole diameter of 0.438 inches, and its solid height of 0.496 inches defines the compressed limit of travel. Typical applications include valve actuators, return mechanisms, and spring-loaded fastener assemblies in both residential and commercial equipment contexts.

Key Features

• 0.42-inch outside diameter with closed and ground ends for flat, stable seating
• 2-inch free length and 0.496-inch solid height defining full compression range
• 5.2 lb/in spring rate with 7.0-pound maximum work load
• Music wire construction meeting AISI 302, ASTM A228, and ASTM A313 standards
• 0.0382-inch wire diameter for precise force-to-size ratio
• Plain silver finish suitable for general mechanical environments

Compatibility

Designed as a precision replacement or specification-grade compression spring for mechanical assemblies requiring a 0.42-inch OD, 2-inch free length, and 5.2 lb/in spring rate in music wire construction.

Installation Notes

Installation is performed by qualified mechanical, HVAC, or plumbing technicians depending on the host assembly. De-energize, depressurize, or shut off the system before servicing any spring-loaded component. Confirm the solid height and free length are appropriate for the travel range of the assembly before installing. Do not compress the spring beyond its solid height during service or testing.