Vlier SSPHB54 Threaded Ball Plunger 1/4-20 Stainless

Product Description

The VLIER SSPHB54 is a threaded ball plunger designed for controlled end-force applications in precision mechanical assemblies. It features a 1/4-20 thread, a 0.125-inch stainless steel ball, and a 0.675-inch body length. The passivated stainless steel body resists corrosion, making this plunger suitable for demanding environments. With an initial end force of 3 pounds and a final end force of 7 pounds, it provides consistent, repeatable detent action. This type of component is typically installed by machinists, tool and die technicians, and mechanical assembly professionals working on fixtures, jigs, or positioning mechanisms.

Threaded ball plungers like the SSPHB54 are used in light-duty detent and positioning applications across industrial, commercial, and OEM assembly environments. The 1/4-20 thread allows direct installation into tapped holes in aluminum, steel, or plastic components. With a maximum ball reach of 0.035 inches, this plunger is suited for applications requiring minimal travel with precise, repeatable force engagement. Common use cases include panel alignment, drawer stops, rotary indexing, and component positioning in machine tool fixtures.

Key Features

• 1/4-20 threaded body for direct installation into standard tapped holes
• 0.125-inch stainless steel ball for durable, low-wear detent contact
• Passivated stainless steel body for corrosion resistance in harsh environments
• Controlled end force: 3 pounds initial, 7 pounds final
• 0.035-inch maximum ball reach for tight, precise positioning applications
• No locking element - allows straightforward installation and adjustment

Compatibility

Designed as a standard 1/4-20 threaded ball plunger for use in any tapped hole accepting a 1/4-20 fastener, suitable for OEM and aftermarket mechanical assembly applications requiring controlled detent force.

Installation Notes

Installation requires a tapped 1/4-20 hole in the mating component. A licensed machinist or qualified mechanical technician should verify thread engagement depth and torque using appropriate hand tools. De-energize or lock out any associated machinery before servicing or replacing plunger components. Avoid over-torquing the body, as this can restrict ball travel and alter the intended end-force characteristics.