Gibraltar KLS-4-PT-G Locking Knob Plunger 1/2-13

Product Description

The GIBRALTAR KLS-4-PT-G is a locking knob handle plunger designed for indexing, positioning, and clamping applications in industrial and mechanical assemblies. It features a 1/2-13 threaded body with a 0.65-inch thread length and a knurled knob head measuring 1.0 inch in diameter and 0.48 inches in height. The spring-loaded plunger delivers an initial end force of 0.5 pounds and a final end force of 4.0 pounds, providing positive retention when engaged. The locking element holds the plunger in the retracted position, keeping it clear of the workpiece during setup or adjustment. Machinists, maintenance technicians, and equipment builders install this type of component in jigs, fixtures, and machine guarding panels.

This plunger is suited for use in light-duty tooling, fixture plates, enclosures, and positioning assemblies where manual locking and release without tools is required. The knurled knob provides a secure grip for hand operation in tight spaces or gloved-hand environments. It is appropriate for both bench-level assembly work and in-machine positioning tasks across manufacturing, automation, and general industrial maintenance settings.

Key Features

• Locking element holds plunger retracted for hands-free positioning during setup
• Knurled knob head for positive hand grip without additional tools
• Spring end force range of 0.5 to 4.0 pounds provides reliable plunger engagement
• 1/2-13 thread size for compatibility with standard tapped holes in tooling plate and fixtures
• 0.25-inch plunger projection and 1.38-inch plunger length for shallow-to-moderate indexing depth
• Compact head profile at 1.0 inch diameter and 0.48 inches height suits space-constrained installations

Compatibility

Designed as a standard-thread locking knob plunger for use in industrial fixtures, jigs, enclosures, and positioning assemblies that accept a 1/2-13 threaded plunger component.

Installation Notes

Installation requires a tapped 1/2-13 hole in the mating panel or plate. Thread engagement should cover the full 0.65-inch thread length for secure retention. Verify plunger projection and travel clearance against the mating index hole or detent before final assembly. No special tools beyond a standard wrench on the thread shank are required for installation or removal.