Gardner Spring MB0875-045-S Belleville Disc Spring

Product Description

The GARDNER SPRING MB0875-045-S is a Belleville disc spring engineered for high-load applications in compact axial spaces. Constructed from stainless steel, this conical washer-style spring delivers 270.95 pounds of load at its rated deflection of 0.027 inches. With an outer diameter of 0.875 inches and an inner diameter of 0.442 inches, it fits fastener assemblies sized for a 7/16-inch bolt. An overall assembled height of 0.067 inches makes it suited for tight stack arrangements. Licensed professionals and precision assembly technicians working in HVAC, industrial, and mechanical systems rely on this part for consistent spring force in bolted joint and vibration-dampening applications.

This disc spring is used in residential and commercial mechanical assemblies where controlled axial load and deflection are required. Common install scenarios include bolted flanges, valve seats, bearing preload arrangements, and vibration isolation mounts. Its stainless steel construction makes it appropriate for environments with moisture exposure or mild corrosion risk. The 7/16-inch bolt size compatibility makes it straightforward to spec into new assemblies or drop-in replacements for existing hardware stacks.

Key Features

• Stainless steel construction resists corrosion in wet or humid service environments
• 270.95-pound load capacity at 0.027 inches of deflection for predictable spring force
• 0.875 inches outer diameter with 0.442 inches inner diameter for 7/16-inch bolt fitment
• 0.067-inch overall height supports tight axial stack configurations
• Conical disc geometry allows stacking in series or parallel to tune load and deflection

Compatibility

Designed for use with 7/16-inch bolt size fastener assemblies. Suitable as a direct replacement or new-assembly component in mechanical, HVAC, and industrial bolted joint applications requiring a 0.875-inch OD Belleville disc spring.

Installation Notes

Installation is typically performed by licensed mechanical or HVAC technicians familiar with precision fastener assemblies. De-energize and depressurize the system before servicing any bolted joint or spring stack. When stacking multiple disc springs, orientation determines whether load or deflection is additive - verify stack configuration against design requirements before torquing fasteners. Use calibrated torque tools appropriate to the fastener specification.