Gibraltar 10012-G Threaded Ball Plunger 5/16-18 Steel

Product Description

The GIBRALTAR 10012-G is a threaded ball plunger designed for indexing, positioning, and light-duty detent applications in mechanical assemblies. It features a 5/16-18 threaded body machined from steel with a matching steel ball, finished in black with a purple color code for quick identification. The ball diameter measures 0.156 inches with a maximum ball reach of 0.04 inches. Initial end force is 4 pounds and final end force is 9 pounds, giving the plunger a defined force progression suitable for controlled engagement. A locking element is included to secure the plunger in the threaded bore once positioned. Machinists, maintenance technicians, and mechanical assemblers install these components in fixtures, jigs, and machine tool setups.

This ball plunger is suited for light industrial and precision mechanical applications where a repeatable, spring-loaded detent or positioning stop is required. Typical installations include fixture plates, slide mechanisms, tooling plates, and machine housings where the 5/16-18 thread is a standard hole specification. The locking element allows the unit to be locked in place after adjustment, preventing movement from vibration or repeated cycling. The compact body length of 0.578 inches keeps the overall profile low in space-constrained assemblies.

Key Features

• 5/16-18 threaded body for installation in standard tapped holes
• Steel body and steel ball construction for durability in industrial environments
• Black finish with purple color code for easy identification and corrosion resistance
• Locking element included to secure plunger position after installation
• 4 lb initial end force and 9 lb final end force for defined detent engagement
• Compact body length of 0.578 inches suits space-constrained assemblies

Compatibility

Designed as a standard 5/16-18 threaded ball plunger for use in any machined or tapped bore accepting that thread specification across industrial fixtures, jigs, tooling plates, and mechanical positioning assemblies.

Installation Notes

Installation requires a properly tapped 5/16-18 threaded hole in the mating component. Thread the plunger into the bore using the appropriate hex key or spanner tool, then engage the locking element to fix the plunger at the desired depth. Ensure the assembly is de-energized and free of mechanical load before servicing or replacing plungers in active machinery. Do not overtighten, as this can deform the locking element or restrict ball movement.