Vlier SSPHB54P Threaded Ball Plunger 1/4-20 Stainless

Product Description

The VLIER SSPHB54P is a threaded ball plunger designed for controlled end-force applications in mechanical assemblies. Built with a stainless steel body and stainless steel ball, it features a 1/4-20 thread size, a ball diameter of 0.125 inches, and a body length of 0.675 inches. The maximum ball reach is 0.035 inches. It delivers an initial end force of 3 pounds and a final end force of 7 pounds, providing consistent, repeatable positioning force. The passivated finish enhances corrosion resistance, making it suitable for demanding or cleanroom environments. A locking element is included to secure the plunger at the desired force setting.

This ball plunger is used in tooling fixtures, jigs, machine assemblies, and positioning mechanisms where a controlled detent or indexing force is required. It is appropriate for light-duty mechanical applications that demand precise, repeatable positioning. Machinists, tool-and-die technicians, and mechanical assembly specialists typically install this type of component. The compact form factor and standard 1/4-20 thread make it straightforward to integrate into existing tapped holes in metal or engineered-plastic assemblies.

Key Features

• 1/4-20 thread size for direct installation into standard tapped holes
• Stainless steel body and ball with passivated finish for corrosion resistance
• 3-pound initial end force and 7-pound final end force for controlled detent action
• Maximum ball reach of 0.035 inches for compact stroke applications
• Locking element included to maintain set position under vibration or load
• Designed for controlled end-force applications per manufacturer specification

Compatibility

Designed as an OEM-style replacement or direct-fit component for mechanical assemblies requiring a 1/4-20 threaded ball plunger with controlled end-force characteristics.

Installation Notes

Installation is performed by mechanical technicians or machinist trades using standard hand tools for threaded fastener work. Thread the plunger into a prepared 1/4-20 tapped hole and use the locking element to secure the desired force setting before final assembly. Ensure the mating bore or detent surface is clean and free of burrs prior to installation. De-energize or lock out any powered equipment before servicing assemblies that contain this component.