Gibraltar 10621SS Press Fit Ball Plunger 0.125 in

Product Description

The GIBRALTAR 10621SS is a press fit ball plunger designed for precision positioning, detenting, and indexing applications in mechanical assemblies. The body is machined from stainless steel, measuring 0.125 inches in diameter and 0.284 inches in length. A Delrin ball with a 0.156-inch diameter extends up to 0.035 inches beyond the body face at maximum reach. The plunger delivers 0.5 pounds of initial end force and 1.0 pound of final end force, providing repeatable, low-force detent action. It installs via press fit into a prepared bore, requiring no flange or locking element. Machinists, tool-and-die technicians, and mechanical assemblers typically source this component for light-duty indexing and positioning work.

This ball plunger suits applications where a small, flush-mounted detent is needed in confined spaces. Typical use cases include fixture plates, jigs, sliding mechanisms, drawer stops, and light-duty indexing assemblies. The stainless steel body resists corrosion in washdown or high-humidity environments. The Delrin ball reduces friction against mating surfaces and minimizes wear on softer workpiece materials. The absence of a flange allows installation in countersunk or through-bored holes where a low-profile fit is required.

Key Features

• Stainless steel body for corrosion resistance in demanding environments
• Delrin ball minimizes friction and wear on mating surfaces
• 0.5 lb initial end force and 1.0 lb final end force for repeatable light-duty detenting
• 0.035-inch maximum ball reach for controlled engagement depth
• Press fit installation — no flange or locking element required
• Purple color code for quick identification during assembly

Compatibility

Designed as a press fit replacement or new-installation ball plunger for light-duty mechanical positioning, indexing, and detenting assemblies where a 0.125-inch body diameter bore is specified.

Installation Notes

Installation is performed by pressing the plunger body into a precision-bored hole sized to the 0.125-inch body diameter. Ensure the bore is clean and deburred before pressing to avoid damaging the body or misaligning the ball. A press tool or arbor press is recommended over impact methods to prevent deforming the plunger. Verify the ball moves freely and returns fully after seating the plunger before closing the assembly.