Gibraltar 34049 Locking Knob Handle Plunger 5/8-11

Product Description

The GIBRALTAR 34049 is a locking knob handle plunger designed for use in indexing, positioning, and clamping applications across industrial and mechanical assemblies. Featuring a knobless threaded stud configuration, this plunger accepts a separately installed or existing knob and delivers a spring-actuated locking force ranging from 5 pounds initial end force to 10 pounds final end force. The stud thread size is 1/2-13, and the body carries a 5/8-11 thread with a 1 inch thread length. Licensed maintenance technicians and machine builders working on jigs, fixtures, and production tooling are the primary installers of this component.

This plunger is suited for use in light-duty to medium-duty fixture assemblies where repeatable positioning and secure locking are required. The knobless threaded stud design allows it to integrate into assemblies where a flush or custom-knob finish is preferred. Typical applications include machine guarding, tooling plates, and access panel latching on production or fabrication equipment.

Key Features

• Locking plunger element provides positive retention without additional hardware
• Knobless threaded stud configuration for custom or flush knob integration
• 5/8-11 external thread with 1 inch thread length for secure body mounting
• Initial end force of 5 pounds, final end force of 10 pounds for reliable spring-loaded clamping
• Maximum plunger diameter of 0.311 inches with a plunger projection of 0.3125 inches
• Compact head height of 0.4375 inches suits space-constrained installations

Compatibility

Designed as an OEM-style replacement or drop-in addition for industrial fixtures, jigs, and tooling assemblies that accept a 5/8-11 threaded locking plunger body with a 1/2-13 stud thread size.

Installation Notes

Installation is typically performed by millwrights, tool and die makers, or maintenance mechanics working on fixture and machine assemblies. De-energize and lock out any powered equipment before servicing components in the assembly area. Thread the plunger body into the mating fixture bore using the 5/8-11 thread, and torque to the fixture manufacturer's specification. Ensure the plunger projection axis is aligned with the index hole to prevent side-loading the plunger pin.