Gibraltar 34181 Knob Handle Plunger 5/8-11 Thread

Product Description

The GIBRALTAR 34181 is a non-locking knob handle plunger with a threaded stud body and no knob, designed for use in indexing, positioning, and workholding fixture applications. The body features a 5/8-11 thread size with a 1 inch thread length and a stainless steel construction with a zinc finish. The plunger delivers 3 lb of initial end force and 6 lb of final end force, with a maximum plunger diameter of 0.311 inches and a total plunger length of 2.186 inches. This component is installed by machinists, toolmakers, and maintenance technicians in industrial fixtures, jigs, and machine tool assemblies.

The 34181 is suited for light-duty positioning and panel-mount applications where a compact, knobless threaded stud configuration is required. The 5/16 inch plunger projection and 0.3120 inch length under head make it well matched to thin-panel or close-tolerance mounting situations. The locking element provides retention in the threaded bore, keeping the plunger body secure during service. Typical installations include machine frames, fixture plates, enclosures, and industrial equipment panels.

Key Features

• Non-locking plunger type with a built-in locking element to secure the body in the threaded mount
• 5/8-11 thread size with 1 inch thread length for standard fixture and panel installations
• 3 lb initial end force and 6 lb final end force for reliable light-duty indexing and positioning
• Maximum plunger diameter of 0.311 inches with a diameter tolerance of plus 0.001 inches
• Stainless steel construction with zinc finish for corrosion resistance in shop environments
• Knobless threaded stud style with 1/2-13 stud thread size for direct mounting without an external knob

Compatibility

Designed as an OEM-style replacement or direct-fit component for industrial fixtures, jigs, and machine tool assemblies requiring a 5/8-11 threaded plunger with non-locking action.

Installation Notes

Installation is performed by machinists or maintenance technicians using standard hand tools appropriate to the 5/8-11 thread. Ensure the mating threaded bore is clean and free of debris before threading in the plunger body. Power down or de-energize any machine or fixture the plunger is mounted to before service. Do not exceed the rated end force range, as overloading the plunger spring can cause premature wear or failure.