Vlier BM10AN Threaded Ball Plunger M10 X 1.5 Steel

Product Description

The VLIER BM10AN is a threaded ball plunger designed for precise, controlled end-force applications in tooling, fixtures, jigs, and positioning assemblies. The unit threads into a tapped M10 x 1.5 hole and uses a spring-loaded steel ball to provide repeatable tactile positioning or detent resistance. Initial end force is 4.5 pounds and final end force is 7.87 pounds, making it suitable for light-duty indexing and holding tasks where consistent, measurable force is required. Both the body and ball are steel construction. A locking element is integrated to secure the plunger in place after installation, eliminating the need for thread-locking compounds in most applications.

The BM10AN is used in machine tool fixtures, CNC tombstones, assembly jigs, die sets, and general industrial positioning equipment where a compact, spring-loaded detent is needed. Its M10 x 1.5 thread and 0.748-inch body length make it well suited for installations where space is at a premium. This is one of the smallest and lightest spring-loaded plunger configurations available in the M10 thread class, making it a common choice for precision fixture work in manufacturing and industrial maintenance environments.

Key Features

• M10 x 1.5 thread size with 1.5 mm pitch for standard metric tapped holes
• Steel body and steel ball for durability in industrial environments
• Integrated locking element secures position after installation without additional compounds
• Controlled end-force range: 4.5 pounds initial to 7.87 pounds final
• Compact 0.748-inch body length suited for tight installation spaces
• 0.236-inch ball diameter with 0.079-inch maximum ball reach for precise detent engagement

Compatibility

Designed for use in any application requiring a spring-loaded ball plunger with an M10 x 1.5 threaded body, including tooling fixtures, jigs, dies, and industrial positioning assemblies where controlled end force is specified.

Installation Notes

Installation is performed by a machinist or maintenance technician using a standard hex key or spanner wrench appropriate for the plunger body. The receiving hole must be tapped to M10 x 1.5 and free of chips or debris before threading in the plunger. Engage the integrated locking element fully to prevent backing out during service. De-energize or lock out any moving equipment before installing or servicing plungers in active fixtures or machinery.