Vlier DBML8A Threaded Ball Plunger M8 X 1.25

Product Description

The VLIER DBML8A is a threaded ball plunger designed for indexing, positioning, and light detent applications in mechanical assemblies. The body is steel with a zinc-plated finish, and the ball is nylon, making it suited for use where the plunger contacts softer surfaces or requires a non-marring tip. The M8 x 1.25 thread allows direct installation into a tapped hole. The nylon ball measures 0.196 inches in diameter with a maximum ball reach of 0.059 inches. Initial end force is 1.12 pounds and final end force is 2.25 pounds, giving installers predictable engagement feel across the travel range.

This plunger is used in tooling fixtures, jigs, machine components, and light industrial assemblies where repeatable positioning or soft detent action is required. Its compact body length of 0.63 inches suits confined spaces within fabricated housings, panels, or machined blocks. The nylon ball is appropriate where metal-on-metal contact must be avoided. The plunger carries a purple color code for quick field identification when multiple plunger specifications are in use on the same assembly or rack.

Key Features

• M8 x 1.25 threaded body for direct installation into a standard tapped hole
• Nylon ball tip provides non-marring contact and smooth detent action
• Steel body with zinc-plated finish for corrosion resistance in general industrial environments
• Initial end force of 1.12 pounds and final end force of 2.25 pounds for controlled engagement
• Maximum ball reach of 0.059 inches suits shallow-stroke positioning applications
• Purple color code enables fast visual identification in multi-plunger setups

Compatibility

Designed as an OEM-style or aftermarket replacement threaded ball plunger for any assembly requiring an M8 x 1.25 threaded ball plunger with a nylon ball and steel body.

Installation Notes

Installation is performed by threading the DBML8A into a pre-tapped M8 x 1.25 hole using a standard hex key or wrench sized to the body flats. Ensure the mating bore is clean and free of chips before threading in the plunger. Do not over-torque the body, as excessive force can crack the nylon ball or distort the internal spring seat. No special tools or trade licensing are required for typical bench or fixture assembly work.