Gibraltar 34151 Knob Handle Plunger 5/8-11 Steel Zinc

Product Description

The GIBRALTAR 34151 is a non-locking knob handle plunger with a threaded stud body designed for use in indexing, positioning, and latch applications across industrial and mechanical assemblies. The plunger features a 5/8-11 external thread with a 1 inch thread length and a knobless threaded stud configuration, meaning it is operated by an externally applied knob or handle rather than an integrated grip. The spring mechanism delivers 5 pounds of initial end force and 10 pounds of final end force, providing consistent, repeatable engagement. Built from steel with a zinc finish, this plunger is suited for environments where moderate corrosion resistance and structural durability are required.

The GIBRALTAR 34151 is used in jig and fixture assemblies, machine guarding, tooling plates, and general industrial equipment where a spring-loaded locating or holding point is needed. The threaded stud body allows direct installation into tapped holes or mounting brackets. The 0.311 inch maximum plunger diameter and 5/16 inch plunger projection make it appropriate for compact assemblies with limited clearance. The locking element confirms the unit stays seated under operational vibration or load conditions.

Key Features

• Non-locking plunger type with locking element for secure seating under vibration
• 5/8-11 external thread with 1 inch thread length for direct installation into tapped holes
• Knobless threaded stud configuration accommodates external operator hardware
• Spring force range of 5 pounds initial to 10 pounds final end force
• Steel construction with zinc finish for durability and moderate corrosion resistance
• Compact 0.311 inch maximum plunger diameter suits tight-clearance assemblies

Compatibility

Designed as an OEM-style replacement or direct-fit component for industrial jig, fixture, and positioning assemblies requiring a 5/8-11 threaded spring plunger with a knobless stud body.

Installation Notes

Installation is performed by threading the stud body into a pre-tapped 5/8-11 hole in the host assembly. Ensure the mating thread depth accommodates the full 1 inch thread length before installation. Disengage any spring load from the plunger tip before threading to avoid cross-threading. A wrench flat or jam nut may be used to lock the body at the desired depth once positioned.