Gibraltar 34247SS Locking Knob Plunger 1/2-13 Thread

Product Description

The GIBRALTAR 34247SS is a locking knob-style plunger with a knobless threaded stud configuration, designed for indexing, positioning, and holding applications in industrial and mechanical assemblies. It features a 1/2-13 body thread with a thread length of 0.875 inches and a maximum plunger diameter of 0.31 inches. The spring-loaded plunger delivers an initial end force of 0.75 pounds and a final end force of 4 pounds, with a locking element that holds the plunger in the retracted position. Machinists, tool and die technicians, and mechanical assembly professionals install this type of plunger in fixtures, jigs, and equipment panels.

This plunger is suited for use in production tooling, machine fixtures, industrial enclosures, and positioning mechanisms where a compact, threaded-body plunger with a locking retract feature is required. The knobless threaded stud design allows the unit to be installed flush or in confined spaces where a standard knob would interfere with adjacent components. The 1.125-inch length under head and 0.25-inch plunger projection make it appropriate for light-duty to moderate-duty indexing tasks on both stationary and moving assemblies.

Key Features

• Locking plunger holds retracted position, preventing unintended engagement during setup or loading
• Knobless threaded stud body allows flush mounting in space-restricted installations
• 1/2-13 external thread with 0.875-inch thread length for secure panel or fixture mounting
• Spring end force ranges from 0.75 pounds initial to 4 pounds final for controlled indexing engagement
• Maximum plunger diameter of 0.31 inches with a tight tolerance of plus 0.001 inches for consistent fit
• Plunger length of 1.937 inches and head height of 0.4375 inches for predictable dimensional integration

Compatibility

Designed as a standard threaded-body locking plunger for use in industrial fixtures, jigs, machine panels, and mechanical assemblies requiring a 1/2-13 threaded mount with a knobless stud configuration.

Installation Notes

Installation is performed by machinists or mechanical assembly technicians using standard thread-tapping and hand tools. Ensure the mounting panel or fixture is tapped to 1/2-13 thread before installation. Power down or de-energize any associated equipment before installing or servicing plungers in active assemblies. Apply thread-locking compound as needed per facility or equipment maintenance standards.