Gibraltar HDLS-3-G Locking Knob Handle Plunger

Product Description

The GIBRALTAR HDLS-3-G is a locking knob handle plunger designed for use in indexing, positioning, and workholding applications across industrial and trade settings. Featuring a countersunk knob style and a 3/8-16 thread with 0.75 inches of thread length, this plunger delivers an initial end force of 1 pound and a final end force of 8 pounds. The maximum plunger diameter is 0.185 inches, with a plunger projection of 0.22 inches and a total plunger length of 1.26 inches. The head diameter measures 1.0 inch. This unit is typically installed by machinists, tool and die technicians, or industrial maintenance professionals working with fixtures, jigs, and positioning mechanisms.

This locking knob handle plunger is suited for light-duty indexing and panel-mounting applications where a secure, manually engaged locking position is required. The countersunk knob allows for a low-profile installation where clearance is limited. Common applications include machine tool fixtures, enclosures, control panels, and workholding setups that require repeatable positioning with manual engagement and release.

Key Features

• Locking plunger type with countersunk knob for low-profile installations
• 3/8-16 thread size with 0.75 inches of thread length for secure mounting
• Initial end force of 1 pound ramping to a final end force of 8 pounds
• Plunger projection of 0.22 inches with a maximum plunger diameter of 0.185 inches
• Head diameter of 1.0 inch with a 7/32 inch hex size for installation and adjustment
• Sold individually, suitable for single-unit replacement or new fixture builds

Compatibility

Designed as an OEM-style or aftermarket replacement locking knob handle plunger for industrial fixtures, jigs, and positioning assemblies requiring a 3/8-16 threaded plunger with countersunk knob configuration.

Installation Notes

Installation is typically performed by a machinist or industrial maintenance technician. Thread the plunger into the appropriate tapped hole to the specified thread engagement depth using the 7/32 inch hex drive. Ensure the mating receptacle or index hole is clean and properly aligned before engaging the plunger. De-energize or lock out any powered equipment before servicing or replacing plungers on active machinery.