Gibraltar SDKN50-PT-G Knob Handle Plunger 1/2-13

Product Description

The GIBRALTAR SDKN50-PT-G is a non-locking knob handle plunger designed for positioning, indexing, and workholding applications in industrial and mechanical assemblies. It features a 1/2-13 thread size with a 1 inch thread length and a Delrin knob for smooth manual actuation. The spring-loaded plunger delivers an initial end force of 0.5 pounds and a final end force of 1.75 pounds, providing consistent engagement pressure. The body is constructed from stainless steel for corrosion resistance in demanding shop and production environments. Machinists, toolmakers, and maintenance technicians install this type of hardware on jigs, fixtures, and equipment panels.

This plunger is suited for light-duty positioning tasks in manufacturing, assembly, and tool-and-die applications. The Delrin knob allows for hand-tightening without tools, making it practical for frequently adjusted components. With a body length of 1.25 inches and a plunger projection of 0.25 inches, it fits into compact assemblies where space is limited. The 0.31 inch maximum plunger diameter is compatible with standard spring plunger bores commonly found in jig and fixture plates.

Key Features

• Non-locking spring plunger design for quick manual engagement and release
• 1/2-13 thread size with 1 inch thread length for secure mounting
• Delrin knob handle for tool-free hand actuation
• Initial end force of 0.5 pounds rising to 1.75 pounds final end force
• Stainless steel construction for corrosion resistance
• Compact 1.25 inch body length suits space-constrained assemblies

Compatibility

Designed as an OEM-style replacement or direct-fit addition for industrial jigs, fixtures, and mechanical assemblies using 1/2-13 threaded spring plunger bores.

Installation Notes

Install this plunger into a tapped 1/2-13 hole using the Delrin knob; a wrench on the hex feature may be used to achieve final torque where hand-tightening is insufficient. Power down or de-energize any associated equipment before servicing components in the assembly. Ensure the mating bore depth accommodates the plunger projection of 0.25 inches to avoid interference during actuation.