Gibraltar KLS-3-PT-G Locking Knob Plunger 3/8-16

Product Description

The GIBRALTAR KLS-3-PT-G is a locking knob handle plunger designed for indexing, positioning, and hold-down applications in industrial and mechanical assemblies. Built from steel with a zinc gold chromate finish, it features a 3/8-16 threaded shank with a 0.75-inch thread length and a knurled knob for secure manual actuation. The spring-loaded plunger delivers an initial end force of 0.5 pounds and a final end force of 3 pounds, providing reliable retention across a range of clamping and locating tasks. The locking element holds the plunger in the retracted position, allowing hands-free operation during part loading or fixture setup. Mechanical contractors, maintenance technicians, and machine builders install this type of hardware in jigs, fixtures, and panel assemblies.

The KLS-3-PT-G suits light-duty positioning and locking tasks in jigs, fixtures, enclosures, and machine frames where a threaded plunger with manual override is required. The 3/8-16 thread size is compatible with standard tapped hole patterns common in fabricated steel and aluminum assemblies. The knurled knob style provides grip without the need for tools, making it appropriate for frequently accessed access panels or adjustment points in production and service environments.

Key Features

• Locking plunger element holds retracted position for hands-free part handling
• Knurled knob style allows tool-free manual actuation
• Spring force range: 0.5 pounds initial to 3 pounds final end force
• Steel construction with zinc gold chromate finish for corrosion resistance
• 3/8-16 thread size fits standard tapped holes in steel and aluminum assemblies
• Compact plunger projection of 0.22 inches for space-constrained applications

Compatibility

Designed as an OEM-style replacement or drop-in component for industrial jigs, fixtures, and mechanical assemblies requiring a 3/8-16 locking knob handle plunger with a 0.75-inch thread length.

Installation Notes

Installation requires a properly tapped 3/8-16 threaded hole in the mating component. Thread the plunger in by hand to start, then tighten to the appropriate engagement depth using the knurled knob or a suitable wrench on the shank if access allows. Ensure the plunger axis aligns with the locating hole or detent to avoid side-loading the spring mechanism. Disconnect or de-energize any associated equipment before servicing plungers in powered assemblies.