Vlier ND58 Threaded Ball Plunger 3/8-16 Delrin Nylon

Product Description

The VLIER ND58 is a threaded ball plunger designed to provide controlled end force in positioning, indexing, and light-duty detent applications. The plunger features a 3/8-16 thread for straightforward installation into tapped holes in fixtures, jigs, tooling plates, and machine components. The body is molded from Delrin, offering good chemical resistance and dimensional stability. The 0.187-inch diameter Nylon ball delivers an initial end force of 5 pounds and a final end force of 10 pounds, making this unit well suited for applications requiring repeatable, predictable engagement force without metal-on-metal contact.

This plunger is used in light industrial and precision assembly environments where consistent part positioning or low-force detent action is needed. Common install scenarios include fixture tooling, slide stops, drawer positioning, and panel alignment. The 0.625-inch body length and 0.053-inch maximum ball reach make it appropriate for shallow-engagement applications where minimal protrusion is required. The white color code identifies the force range for quick identification in multi-plunger setups.

Key Features

• 3/8-16 thread for direct installation into standard tapped holes
• Delrin body provides chemical resistance and dimensional stability
• Nylon ball eliminates metal-on-metal contact for gentle, non-marring engagement
• 5-pound initial end force and 10-pound final end force for controlled detent action
• 0.053-inch maximum ball reach suits shallow-engagement applications
• White color code allows quick force-range identification in multi-plunger installations

Compatibility

Designed for controlled end force applications in fixtures, jigs, tooling plates, and machine components accepting a 3/8-16 threaded plunger with a Delrin body and Nylon ball.

Installation Notes

Installation is performed by threading the ND58 into a pre-tapped 3/8-16 hole using a standard hex wrench or screwdriver slot if present on the body. Verify the mating surface material is compatible with a Nylon ball to avoid unintended wear. No power source or lockout procedure is required for mechanical plungers, but always de-energize or unload any spring-loaded assembly before servicing adjacent components. Do not exceed the rated final end force to avoid deforming the Nylon ball or stripping the thread.