Vlier DSSBL58 Threaded Ball Plunger 3/8-16 5/8 in

Product Description

The VLIER DSSBL58 is a threaded ball plunger designed for indexing, positioning, and light detent applications in mechanical assemblies. The body is machined from stainless steel and features a 3/8-16 thread for straightforward installation into tapped holes. The nylon ball measures 0.188 inches in diameter and extends a maximum of 0.048 inches beyond the body face under load. Initial end force is 2.5 pounds, with a final end force of 5 pounds. Machinists, toolmakers, and mechanical assemblers install this type of plunger where repeatable, low-force positioning is required.

This ball plunger is suited for use in jigs, fixtures, tooling plates, and light-duty indexing mechanisms across industrial and manufacturing environments. The zinc-plated finish and stainless steel body provide corrosion resistance in moderately demanding shop conditions. The nylon ball minimizes marring on mating surfaces, making it appropriate for applications where surface finish protection matters. Body length is 0.625 inches, keeping the assembly compact within tight space envelopes.

Key Features

• Stainless steel body for corrosion resistance in shop and industrial environments
• Nylon ball reduces surface marring on mating or indexed components
• 3/8-16 thread for direct installation into standard tapped holes
• 2.5 pound initial end force and 5 pound final end force for consistent, light detent feel
• Maximum ball reach of 0.048 inches provides controlled engagement depth
• Zinc-plated finish adds additional surface protection

Compatibility

Designed as a standard threaded ball plunger replacement or new installation for any fixture, jig, or mechanical assembly with a 3/8-16 tapped hole requiring light-force indexing or positioning.

Installation Notes

Installation is performed by threading the plunger body directly into a pre-tapped 3/8-16 hole using a hex key or spanner wrench as appropriate for the drive style. Ensure the mating bore is clean and free of chips before installation. Do not overtighten, as excessive torque can distort the ball seat or damage the nylon ball. Verify ball travel and force characteristics after installation to confirm proper detent function.