Vlier B47 Threaded Ball Plunger 5-40 Steel Body

Product Description

The VLIER B47 is a threaded ball plunger designed to provide controlled end force in precision positioning and detent applications. Featuring a 5-40 thread size, a 0.062-inch steel ball diameter, and a body length of 0.25 inches, this device represents one of the smallest and lightest spring-loaded plunger designs available. It delivers an initial end force of 0.25 pounds and a final end force of 0.75 pounds, making it suitable for applications that require consistent, repeatable, low-force engagement. The steel body and steel ball construction offer reliable durability in compact assemblies. Installation is typically performed by mechanical technicians or precision equipment assemblers working with light-duty detent mechanisms.

The B47 is well suited for use in light-duty indexing, positioning, and detent applications where minimal spatial footprint and precise force control are required. The 5-40 thread allows installation into small threaded bores in panels, fixtures, and mechanical assemblies. A maximum ball reach of 0.02 inches provides a shallow engagement stroke appropriate for fine-tolerance setups. The purple color code aids in quick field identification among mixed plunger inventories.

Key Features

• 5-40 thread size for installation in small-bore threaded housings
• 0.062-inch steel ball diameter for precise low-force detent engagement
• Initial end force of 0.25 pounds and final end force of 0.75 pounds for controlled, repeatable actuation
• Maximum ball reach of 0.02 inches for shallow-stroke, fine-tolerance applications
• Steel body and steel ball construction for durable service in compact assemblies
• Purple color code for fast identification in mixed plunger inventories

Compatibility

Designed as an OEM-style threaded ball plunger for light-duty detent, indexing, and positioning assemblies requiring a 5-40 thread and controlled low-force spring engagement.

Installation Notes

Installation is performed by threading the B47 into a properly tapped 5-40 bore using the appropriate small hex key or driver. Ensure the mating bore is clean and free of debris before installation to avoid damage to the ball or spring mechanism. Do not overtighten, as this can restrict ball travel and alter the designed end-force characteristics. Verify ball reach clearance in the assembly before final installation.