Gardner Spring 36040G Precision Compression Spring

Product Description

The GARDNER SPRING 36040G is a precision compression spring manufactured from music wire (AISI 302 / ASTM A228 / ASTM A313) with a plain silver finish. It features a 0.3 inch outside diameter, 0.687 inch free length, and 0.022 inch wire diameter. The spring delivers a maximum work load of 2.5 pounds at a spring rate of 4.5 pounds per inch, with closed and ground ends for stable seating and consistent load transfer. It is suited for OEM assemblies, mechanical sub-assemblies, and precision instrument applications where tight dimensional tolerances are required.

This spring is used in light-duty compression applications across a wide range of industries including HVAC equipment, plumbing fixtures, fluid control valves, and general mechanical assemblies. Its small form factor and precise specifications make it appropriate for engineers and technicians sourcing replacement or design-in components for equipment that requires consistent spring force within a confined bore. The hole diameter clearance is 0.312 inches, and solid height is 0.128 inches, making it compatible with tight-clearance installations.

Key Features

• 0.3 inch outside diameter with 0.022 inch music wire construction
• Spring rate of 4.5 pounds per inch for predictable, linear load response
• Maximum work load of 2.5 pounds (11.12 newtons)
• Closed and ground end type for flat, stable seating surfaces
• Meets AISI 302, ASTM A228, and ASTM A313 material standards
• Plain silver finish with solid height of 0.128 inches

Compatibility

Designed as a precision OEM-style compression spring suitable for mechanical assemblies requiring a 0.3 inch outside diameter and 0.687 inch free length in light-duty compression applications.

Installation Notes

Installation is typically performed by mechanical technicians or OEM assembly personnel. Ensure the mating bore diameter accommodates the 0.312 inch hole diameter clearance before seating the spring. Verify the spring is fully compressed within its solid height of 0.128 inches only under intended maximum load conditions to avoid set. Do not over-compress beyond the rated maximum work load of 2.5 pounds.