Gibraltar KNL-1-PT-G Knob Handle Spring Plunger 1/4-20

Product Description

The GIBRALTAR KNL-1-PT-G is a knurled knob handle spring plunger designed for indexing, positioning, and light-duty latching applications in industrial and mechanical assemblies. It features a 1/4-20 thread with a 0.5-inch thread length and a non-locking steel plunger with a maximum diameter of 0.123 inches. The spring delivers 1 pound of initial end force and 4 pounds of final end force, making it well-suited for repeatable, hand-adjusted positioning tasks. Machinists, maintenance technicians, and assembly professionals install this type of component into threaded housings or fixtures where controlled plunger engagement is needed without tooling.

This spring plunger is used in jigs, fixtures, machine tool components, and light fabrication setups where a hand-adjustable, non-locking index point is required. The knurled knob allows tool-free adjustment by hand, which suits production environments where frequent repositioning occurs. The steel body with zinc gold chromate finish offers corrosion resistance suitable for general shop and industrial environments. It ships as a single unit and is intended for direct installation into a pre-tapped 1/4-20 threaded hole.

Key Features

• Non-locking plunger type allows free retraction without a separate release step
• Knurled knob head enables tool-free hand adjustment in the field
• Steel construction with zinc gold chromate finish for general corrosion resistance
• 1/4-20 thread size fits standard pre-tapped holes in fixtures and jigs
• Spring force range of 1 pound initial to 4 pounds final provides consistent indexing feel
• Compact body length of 0.79 inches suits tight-clearance assemblies

Compatibility

Designed as a direct-install spring plunger for any fixture, jig, or mechanical assembly with a pre-tapped 1/4-20 threaded hole requiring a non-locking, hand-adjustable plunger point.

Installation Notes

Install into a clean, pre-tapped 1/4-20 through-hole or blind hole using hand pressure on the knurled knob; use a wrench on the head flats only if thread engagement requires additional torque to seat the shoulder. Ensure the plunger bore is clear of debris before installation to prevent binding of the plunger tip. De-energize or lock out any moving machinery before servicing or replacing spring plungers in active fixtures. Verify plunger projection clearance against mating components before finalizing installation.