Gardner Spring MB0375-015-S Belleville Disc Spring

Product Description

The GARDNER SPRING MB0375-015-S is a Belleville disc spring engineered for applications requiring high load capacity in a compact axial footprint. Manufactured from stainless steel, this conical washer-style spring measures 0.375 inches outer diameter and 0.19 inches inner diameter, with an overall assembled height of 0.027 inches. At full rated deflection of 0.022 inches, the spring delivers a load of 428 pounds. These characteristics make it suitable for precision fastener preloading, vibration dampening, and thermal expansion compensation in mechanical assemblies. Typically installed by mechanical technicians, assembly engineers, and maintenance professionals working with bolted joint assemblies requiring consistent clamp force.

This disc spring is sized for use with 3/16 inch bolt applications. Its compact outer diameter and stainless steel construction make it appropriate for use in corrosive environments, high-cycle mechanical assemblies, and installations where standard flat washers cannot provide adequate spring back or load maintenance. Common installation scenarios include pump housings, valve stems, electrical panel hardware, and precision instrument mounting where controlled deflection under load is required.

Key Features

• Stainless steel construction for corrosion resistance in harsh or wet environments
• 428 pound load capacity at 0.022 inches deflection for high force density in a small envelope
• 0.375 inches outer diameter fits 3/16 inch bolt applications
• Conical disc geometry maintains consistent clamp load under thermal cycling and vibration
• Compact 0.027 inches overall height allows stacking for increased deflection or load

Compatibility

Designed for use with 3/16 inch bolt fastener assemblies where a Belleville-style conical disc spring is specified.

Installation Notes

Installation is typically performed by mechanical assemblers or maintenance technicians using standard hand tools. Ensure the mating surfaces are clean and free of burrs before seating the spring to prevent uneven load distribution. Springs may be stacked in series to increase deflection travel or in parallel to increase load capacity; consult the original design specification before modifying stack arrangements. Always de-energize or depressurize the assembly before disassembly or replacement of loaded spring elements.