Vlier SSB54N Threaded Ball Plunger 1/4-20 Stainless Steel

Product Description

The VLIER SSB54N is a threaded ball plunger designed for controlled end-force applications where precise, repeatable positioning is required. It features a 1/4-20 thread size, a stainless steel body, and a stainless steel ball measuring 0.125 inches in diameter. The body length is 0.531 inches, with a maximum ball reach of 0.035 inches. Initial end force is 3 pounds and final end force is 7 pounds. A locking element is included to secure the plunger once set. This is among the smallest and lightest spring-loaded positioning devices in its class, suited for precision assemblies and fixture work.

The SSB54N is used in applications requiring controlled, light-force ball engagement - such as indexing, detenting, and light-load positioning in jigs, fixtures, tooling, and mechanical assemblies. Its compact 1/4-20 threaded body makes it suitable for installations where space is limited. The stainless steel construction supports use in corrosive or wash-down environments. Installers include tool and die makers, mechanical assemblers, and maintenance technicians working on precision equipment.

Key Features

• 1/4-20 thread size for standard threaded installation
• Stainless steel body and ball for corrosion resistance
• 3 pound initial end force and 7 pound final end force for controlled engagement
• 0.125 inch ball diameter with 0.035 inch maximum ball reach
• Integrated locking element to secure plunger position after adjustment
• Compact 0.531 inch body length suited for space-constrained assemblies

Compatibility

Designed for use in any application requiring a 1/4-20 threaded ball plunger with controlled end force, including indexing fixtures, tooling plates, and precision mechanical assemblies.

Installation Notes

Installation requires a tapped 1/4-20 hole in the mating component. Use an appropriate hex key or driver to thread the plunger to the desired depth before engaging the locking element to fix its position. Ensure the mating surface material and finish are appropriate for the specified end-force range to avoid premature wear on the ball. De-energize or secure any moving equipment before servicing or replacing ball plungers in active assemblies.