Vlier BL52 Threaded Ball Plunger 10-32 Steel Ball

Product Description

The VLIER BL52 is a threaded ball plunger designed for controlled end-force applications in precision mechanical assemblies. It features a 10-32 thread size, a 0.094-inch steel ball diameter, and a body length of 0.513 inches. The spring-loaded ball delivers an initial end force of 0.5 pounds and a final end force of 1.5 pounds, with a maximum ball reach of 0.025 inches. Its compact, lightweight form makes it one of the smallest spring-loaded positioning devices available. Both the body and ball are constructed from steel for durability in demanding service environments. This plunger is installed by machinists, toolmakers, and mechanical assembly technicians in industrial and trade settings.

The BL52 is suited for applications requiring repeatable, low-force ball detent positioning. Typical uses include panel alignment, sliding mechanism indexing, light-duty detent positioning, and fixture locating in production equipment. The controlled end-force design is especially useful where consistent tactile feedback or repeatable part positioning is required across high-cycle operations. Its small footprint allows integration into tight spaces where standard plungers would not fit.

Key Features

• 10-32 threaded body for direct installation into tapped holes
• Steel body and steel ball for strength and wear resistance
• Initial end force of 0.5 pounds, final end force of 1.5 pounds for controlled detent feel
• Maximum ball reach of 0.025 inches for precise, low-travel positioning
• Compact 0.513-inch body length fits tight assembly clearances
• No locking element - threads directly without secondary lock hardware

Compatibility

Designed as an OEM-style replacement or new-installation threaded ball plunger for mechanical assemblies requiring a 10-32 threaded detent device with controlled spring end force.

Installation Notes

Installation requires a tapped 10-32 hole in the mating component. A standard hex wrench or screwdriver appropriate to the drive type should be used to thread the plunger to the desired seating depth - verify end-force engagement before finalizing position. De-energize or lock out any moving machinery before servicing plunger locations in automated equipment. Do not exceed the rated ball reach or apply side-loading forces that could deform the ball seat.