Vlier DBMH12A Threaded Ball Plunger M12 X 1.75

Product Description

The VLIER DBMH12A is a threaded ball plunger designed for indexing, positioning, and light-duty detent applications in mechanical assemblies. It features a zinc-plated steel body with an M12 x 1.75 thread and a nylon ball measuring 0.315 inches in diameter. The nylon ball provides smooth, low-friction contact with mating surfaces while protecting softer workpiece materials from marring. With an initial end force of 16.86 pounds and a final end force of 25.85 pounds, this plunger delivers consistent spring-loaded engagement suited to production tooling, fixtures, and machine components. Mechanical assemblers, toolmakers, and maintenance technicians are the typical installers.

This ball plunger is used in industrial and manufacturing settings where repeatable positioning or detent action is needed. Typical applications include fixture plates, jigs, sliding components, and panel assemblies where a spring-loaded nylon ball must engage a mating detent hole or groove. The M12 x 1.75 thread suits metric-tapped housings common in European and metric-standard equipment. The 0.866 inch body length and 0.098 inch maximum ball reach are appropriate for shallow-thread installations where envelope space is limited.

Key Features

• M12 x 1.75 threaded body for direct installation into metric-tapped bores
• Nylon ball resists marring on soft or coated mating surfaces
• Zinc-plated steel body provides corrosion resistance in general industrial environments
• 16.86 pound initial end force and 25.85 pound final end force for consistent detent engagement
• 0.098 inch maximum ball reach suits shallow-clearance detent applications
• Purple color code for quick field identification of force and size specification

Compatibility

Designed as an OEM-style replacement or new-installation ball plunger for metric-tapped housings requiring an M12 x 1.75 threaded plunger with a nylon ball and steel body.

Installation Notes

Installation is typically performed by mechanical assemblers or toolmakers using a hex wrench or open-end wrench sized for the body flats. De-energize or lock out any machine before servicing components in moving assemblies. Thread the plunger into a clean, properly tapped M12 x 1.75 bore and tighten to a snug fit without over-torquing the threaded body. Verify ball engagement depth against the mating detent geometry before returning the assembly to service.