Gardner Spring MB0312-017-S Belleville Disc Spring

Product Description

The GARDNER SPRING MB0312-017-S is a Belleville disc spring - a conical washer-style spring designed to deliver high load capacity in a compact axial footprint. Manufactured from stainless steel, this spring measures 0.312 inches in outer diameter, 0.156 inches in inner diameter, and 0.025 inches in overall height. It delivers a rated load of 1,630.6 pounds at a deflection of 0.0161 inches. Belleville disc springs of this type are specified by mechanical engineers and installed by precision assembly technicians wherever controlled axial preload, vibration damping, or thermal compensation is required in a tight radial envelope.

This spring is suited for use in compact mechanical assemblies requiring precise spring force in a small package. Typical applications include fastener preload retention, valve assemblies, electrical contact springs, and precision instrument housings. The stainless steel construction makes it appropriate for environments where corrosion resistance is a requirement, including wet, chemically active, or outdoor-exposed assemblies. It is sized for a 5/32-inch bolt, making it straightforward to integrate into standard fastened joints.

Key Features

• Stainless steel construction for corrosion resistance in demanding environments
• 0.312 inches outer diameter for use in compact radial spaces
• 1,630.6-pound load rating at 0.0161 inches deflection - high force-to-size ratio
• 0.025 inches overall height allows stacking for load or deflection tuning
• Sized for 5/32-inch bolt applications
• Sold in packages of 12 with a minimum order quantity of 1

Compatibility

Designed for use with 5/32-inch bolt sizes in precision mechanical assemblies requiring conical disc spring preload. Verify inner diameter, outer diameter, and load requirements against your assembly drawing before installation.

Installation Notes

Belleville disc springs are installed by mechanical assemblers and precision technicians working to engineered assembly drawings. De-energize and de-load the assembly before servicing any spring components. Springs may be stacked in parallel to increase load capacity or in series to increase deflection range - confirm the stacking configuration against the design specification before assembly. Do not exceed the rated deflection, as flattening the spring beyond design limits will permanently alter its load characteristics.