Value Collection BWSI031-100BX Belleville Disc Spring

Product Description

The VALUE COLLECTION BWSI031-100BX is a steel Belleville disc spring designed for use in bolted assemblies, fastener stacks, and mechanical systems that require consistent axial load under compression. Also called a conical disc spring or washer spring, this component stores and releases energy as it deflects, maintaining clamp load and compensating for thermal expansion or vibration-induced relaxation. The inner diameter measures 0.331 inches and the outer diameter measures 0.512 inches, sizing it for use with 5/16-inch bolt hardware. It is installed by maintenance technicians, industrial mechanics, and trade professionals working on precision fastened assemblies.

This disc spring is suited for applications where maintaining preload on fasteners is critical, including vibration-prone mechanical assemblies, flanged connections, and precision clamping systems. The compact geometry fits tight clearances typical of small-bolt assemblies. This spring is sold with a minimum order quantity of 100 units, making it appropriate for stocking or batch-assembly work in maintenance shops, production environments, and field service operations.

Key Features

• Steel construction for durability under cyclic compressive loads
• Inner diameter of 0.331 inches, compatible with 5/16-inch bolt applications
• Outer diameter of 0.512 inches for compact fitment in tight assemblies
• Conical disc profile provides consistent axial spring force and load compensation
• Suitable for stacking in series or parallel to tune load and deflection characteristics

Compatibility

Designed as an OEM-style replacement or general-use Belleville disc spring for 5/16-inch bolt diameter assemblies requiring axial load retention.

Installation Notes

Belleville disc springs are installed by mechanical technicians and industrial maintenance professionals. Before installation, relieve all system pressure and ensure fasteners are fully unloaded. Springs may be stacked in series to increase deflection range or in parallel to increase load capacity — confirm stack orientation against assembly drawings. Follow applicable torque specifications from the equipment manufacturer when re-torquing fastened joints.