Vlier DL58 Threaded Ball Plunger 3/8-16 Delrin Body

Product Description

The VLIER DL58 is a threaded ball plunger designed for controlled end-force applications in precision positioning, indexing, and detent mechanisms. It features a 3/8-16 thread, a 0.187-inch stainless steel ball, and a Delrin body that measures 0.625 inches in body length. The DL58 delivers an initial end force of 2.5 pounds and a final end force of 5 pounds, making it suitable for light-duty controlled-force applications. The Delrin body offers corrosion resistance and low friction, while the stainless steel ball provides durability under repeated cycling. This plunger is installed by machinists, tool-and-die professionals, and mechanical technicians working on fixtures, jigs, and assemblies.

The DL58 is suited for use in machine tool fixtures, assembly jigs, and industrial positioning equipment where repeatable, controlled detent force is required. The 3/8-16 thread allows installation into standard tapped holes. The maximum ball reach of 0.053 inches keeps engagement depth consistent across production runs. A purple color code identifies the spring force rating for quick visual identification during maintenance and assembly operations.

Key Features

• 3/8-16 threaded body for installation into standard tapped holes
• Stainless steel ball for durability and corrosion resistance
• Delrin body for low friction and chemical resistance
• Controlled end force: 2.5 pounds initial, 5 pounds final
• Maximum ball reach of 0.053 inches for precise engagement depth
• Purple color code for quick spring-force identification in the field

Compatibility

Designed as an OEM-style replacement or direct-fit component for fixtures, jigs, and assemblies requiring a 3/8-16 threaded ball plunger with controlled end-force characteristics.

Installation Notes

Installation requires a properly tapped 3/8-16 hole in the mating component. De-energize or lock out any powered equipment before servicing fixtures or assemblies containing this plunger. Use appropriate thread engagement depth to avoid bottoming the ball plunger body, which can affect end-force performance. No locking element is included; apply thread-locking compound if retention in the tapped hole is required by the application.