Vlier B47P Threaded Ball Plunger 5-40 0.062 in Ball

Product Description

The VLIER B47P is a threaded ball plunger designed for precision positioning and controlled end-force applications in mechanical assemblies. It features a 5-40 thread size, a steel body, and a steel ball measuring 0.062 inches in diameter. The body length is 0.25 inches, making it one of the smallest and lightest spring-loaded devices in its class. Initial end force is 0.25 pounds and final end force is 0.75 pounds, providing a predictable and repeatable force range. A locking element is included to secure the plunger in position after installation. This part is installed by machinists, mechanical assemblers, and precision equipment technicians.

The B47P is suited for applications requiring controlled detent or positioning force in tight or miniaturized assemblies. Its compact size makes it appropriate for use in instruments, fixtures, jigs, and light-duty mechanical components where space constraints and precise force control are critical. The locking element allows for field adjustment and secure retention once the desired position is set. This plunger is commonly found in both industrial and OEM manufacturing environments where repeatable tactile feedback or indexed positioning is required.

Key Features

• 5-40 thread size for installation in small-format tapped holes
• Steel body and steel ball for durability in mechanical assemblies
• 0.062 inch ball diameter with 0.02 inch maximum ball reach
• Initial end force of 0.25 pounds and final end force of 0.75 pounds for controlled detent action
• Locking element included for secure positioning after adjustment
• Compact 0.25 inch body length - among the smallest spring-loaded plunger designs available

Compatibility

Designed for use in precision mechanical assemblies requiring a 5-40 threaded ball plunger with controlled spring end force. Suitable for fixtures, instruments, and positioning mechanisms that require a miniature spring-loaded detent device.

Installation Notes

Installation is performed by machinists or mechanical assemblers using the appropriate driver for the 5-40 thread. Ensure the mating tapped hole is clean and correctly sized before threading in the plunger. De-energize or fully unload any assembly under tension or pressure before servicing adjacent components. Use the locking element to fix the plunger at the desired extension once the correct end force is confirmed.