Vlier PHB48AP Threaded Ball Plunger 6-40 Steel Body

Product Description

The VLIER PHB48AP is a threaded ball plunger designed to provide controlled end force in precision positioning and detent applications. It features a steel body with a stainless steel ball and a zinc-plated finish. The 6-40 thread size, 0.35 inch body length, and 0.078 inch ball diameter make this a compact unit suited for tight tolerance assemblies. Initial end force is 0.5 pounds and final end force is 1 pound, with a maximum ball reach of 0.023 inches. A locking element is incorporated to secure the plunger once installed. Licensed machinists, tool and die technicians, and mechanical assembly professionals typically specify and install this component.

The PHB48AP is used in applications requiring repeatable, controlled end force - such as indexing fixtures, jigs, tooling plates, and light-duty detent mechanisms. Its small thread size and short body length suit it for compact assemblies where space is constrained. The controlled force range makes it appropriate for applications where consistent, predictable ball engagement is required without damaging delicate workpieces or mating surfaces.

Key Features

• 6-40 thread size for compact, precision installations
• Stainless steel ball provides corrosion resistance at the contact point
• Steel body with zinc-plated finish for general corrosion protection
• Locking element secures plunger position after adjustment
• Controlled end force: 0.5 pounds initial, 1 pound final
• Purple color code for quick field identification

Compatibility

Designed as an OEM-style replacement or new-installation threaded ball plunger for machinery, fixtures, and tooling assemblies requiring a 6-40 threaded detent or positioning element.

Installation Notes

Installation is performed by machinists or mechanical assembly technicians using a properly sized driver or hex tool. Ensure the mating threaded hole is clean and free of debris before installation. The locking element should be engaged after the plunger is set to the desired position to prevent backing out under vibration. De-energize or lock out any powered equipment before servicing assemblies that contain this component.