Gardner Spring MB0312-017 Belleville Disc Spring

Product Description

The GARDNER SPRING MB0312-017 is a Belleville disc spring designed to deliver precise, consistent load force within a compact axial envelope. With a 0.312 inches outer diameter, 0.156 inches inner diameter, and an overall assembled height of 0.025 inches, this conical washer-style spring generates 13.71 pounds of load at its rated deflection of 0.0413 inches. Constructed from steel, it is suited for applications where high load capacity is needed in a limited space. Installation is typically performed by mechanical assemblers, maintenance technicians, or trade professionals working on fastener preload, valve, or precision hardware assemblies.

The MB0312-017 fits applications calling for a 5/32 inch bolt size interface. Belleville disc springs of this size are commonly used in industrial fastener assemblies, electrical contact stacks, valve seats, and precision mechanical sub-assemblies where controlled deflection and repeatable spring force are critical. The small form factor makes it appropriate for tight-tolerance assemblies found in HVAC equipment, pumps, and general mechanical hardware requiring axial load management.

Key Features

• 0.312 inches outer diameter with 0.156 inches inner diameter for 5/32 inch bolt size fitment
• Overall assembled height of 0.025 inches suits space-constrained axial applications
• Rated load of 13.71 pounds at 0.0413 inches deflection for predictable spring performance
• Steel construction provides durability under cyclic compressive loads
• Sold individually with a package quantity of 12 for stocking convenience

Compatibility

Designed for assemblies requiring a Belleville disc spring with a 5/32 inch bolt size interface, 0.312 inches outer diameter, and 0.156 inches inner diameter. Verify load, deflection, and dimensional requirements against your assembly drawings before installation.

Installation Notes

Belleville disc springs are installed by mechanical or trade technicians familiar with spring-stack assemblies. Before servicing any assembly, de-energize and relieve all stored mechanical and hydraulic energy. Springs may be stacked in series to increase deflection range or in parallel to increase load capacity - confirm the stacking configuration against design specifications. Do not exceed the rated deflection, as over-compression can permanently deform the spring and alter load characteristics.