Gibraltar 10625SS Press Fit Ball Plunger 0.375 in

Product Description

The GIBRALTAR 10625SS is a press fit ball plunger designed for precision positioning, indexing, and detent applications in mechanical assemblies. The body is machined from stainless steel with a Delrin ball, giving the plunger corrosion resistance alongside smooth, consistent spring-loaded action. At 0.375 inches in body diameter and 0.864 inches in body length, this plunger installs by press fitting directly into a drilled or reamed hole without threads or additional hardware. Initial end force is 2.5 pounds, with a final end force of 7 pounds. Machinists, toolmakers, and assembly technicians use this type of component to create repeatable positioning points in jigs, fixtures, and machine components.

This ball plunger fits applications where a flush or low-profile detent is required and threaded body styles are not suitable. Common uses include light-duty fixture alignment, sliding panel retention, drawer positioning, and automation assembly fixtures. The press fit installation method makes it well suited to applications where external threads would interfere with adjacent components or where a clean external surface is required. The Delrin ball provides a degree of impact resistance and reduces scoring on mating surfaces compared to steel ball versions.

Key Features

• Stainless steel body for corrosion resistance in wash-down or humid environments
• Delrin ball minimizes surface scoring on soft mating materials
• Press fit installation — no threads required, clean external profile
• 0.312 inch ball diameter with 0.11 inch maximum ball reach
• 2.5 pound initial end force and 7 pound final end force for light-duty detent applications
• No flange, no locking element — compact straight-body design

Compatibility

Designed as an OEM-style or aftermarket replacement press fit ball plunger for light mechanical assemblies, jigs, and fixtures requiring a 0.375 inch press fit bore and spring-loaded detent action.

Installation Notes

Installation is performed by pressing the plunger body into a properly sized and toleranced bore using an arbor press or similar controlled force tool. Ensure the receiving hole is reamed or drilled to the appropriate fit tolerance to avoid damaging the plunger body or distorting the spring mechanism during installation. Do not hammer the plunger in without a support plate, as this can crack the Delrin ball or deform the body. Once seated, verify the ball moves freely through its full range of reach before placing the assembly into service.