Gibraltar SSTPR50-G Locking Pull Ring Plunger 1/2-13

Product Description

The GIBRALTAR SSTPR50-G is a stainless steel locking pull ring plunger designed for indexing, positioning, and holding applications in industrial and mechanical assemblies. The plunger features a 1/2-13 inch thread with a thread length of 1.4 inches and a body length of 2 inches. The 5/16 inch diameter plunger projects 0.5 inches from the body and delivers an initial end force of 2.5 pounds, building to a final end force of 5 pounds. The pull ring mechanism allows the plunger to be retracted by hand without additional tools, making it well suited for panels, fixtures, and assemblies that require frequent adjustment or manual release. Licensed tradespeople and industrial maintenance technicians install this type of component in equipment frames, machine guarding, and positioning jigs.

This plunger is suited for light-duty locking and indexing tasks in both commercial and industrial settings. Typical applications include panel alignment, equipment access doors, fixture positioning, and adjustable mounting assemblies. The stainless steel construction provides corrosion resistance in wash-down environments, outdoor enclosures, or anywhere moisture exposure is a concern. The locking pull ring design prevents unintended retraction during operation, which is important in vibration-prone equipment mounting scenarios.

Key Features

• Stainless steel construction for corrosion resistance in wet or harsh environments
• Locking pull ring allows manual retraction without tools
• 2.5 pound initial end force to 5 pound final end force for reliable indexing hold
• 1/2-13 thread size for standard tapped-hole installation
• Plunger projects 0.5 inches with a 5/16 inch plunger diameter
• Compact head height of 0.6 inches suits tight-clearance assemblies

Compatibility

Designed as a standard replacement or new-installation locking pull ring plunger for equipment frames, machine panels, and positioning fixtures that use a 1/2-13 threaded mounting hole.

Installation Notes

Installation is performed by threading the plunger body into a tapped 1/2-13 hole using a wrench on the hex body or head. Power down or de-energize any equipment before working on panels or assemblies where this plunger will be installed. Verify thread engagement depth against the 1.4 inch thread length to ensure full engagement without bottoming out. Follow applicable machinery safety standards and the equipment manufacturer's service procedures when replacing positioning hardware.