Gibraltar 54610XG Locking Knob Handle Plunger 1/4-20

Product Description

The GIBRALTAR 54610XG is a locking knob handle plunger designed for precision indexing and positioning applications in industrial, mechanical, and assembly fixtures. Built from steel with a zinc chromate finish, it features a 1/4-20 thread size and a 0.4-inch thread length, making it suitable for light-duty clamping and retention tasks. The knurled knob provides a secure, non-slip grip for manual operation without tools. Initial end force is 0.5 pounds, with a final end force of 2 pounds, giving the installer repeatable, controlled engagement. Machinists, toolmakers, and maintenance technicians typically specify this type of plunger for jigs, fixtures, and panel assemblies.

This plunger is suited for use in manufacturing fixtures, machine tool setups, and control panel assemblies where a compact, manually actuated locking plunger is required. The locking knob style allows the plunger to be retracted and held in position while components are repositioned, then released for positive engagement. At 0.05 pounds, the 54610XG is a lightweight component well matched to applications with limited clearance and space constraints. It is sold individually and is appropriate for both original equipment builds and maintenance replacement situations.

Key Features

• Locking plunger type holds retracted position for hands-free component handling
• Knurled knob for positive manual grip without additional tooling
• 1/4-20 thread size with 0.4-inch thread length for standard tapped-hole installation
• Initial end force of 0.5 pounds, final end force of 2 pounds for light controlled engagement
• Steel construction with zinc finish for corrosion resistance in shop environments
• Compact body length of 0.525 inches suits tight clearance installations

Compatibility

Designed as a standard 1/4-20 locking knob handle plunger for use in industrial fixtures, jigs, and mechanical assemblies requiring a compact manual indexing or retention plunger.

Installation Notes

Installation is performed by threading the 54610XG into a pre-tapped 1/4-20 hole by hand or with a wrench on the knob body, taking care not to overtighten and risk stripping the threads. Verify the plunger projection of 0.125 inches clears all adjacent components before final installation. No special certifications are typically required for fixture hardware of this type, but follow applicable facility safety lockout procedures when servicing live equipment.