Gibraltar KNL-4-PT-G Knob Handle Plunger 1/2-13

Product Description

The GIBRALTAR KNL-4-PT-G is a non-locking knob handle plunger designed for indexing, positioning, and clamping applications in industrial and mechanical assemblies. It features a 1/2-13 thread with a 0.875-inch thread length and a 1.13-inch body length. The knurled knob head provides a secure hand grip for frequent adjustment without tools. Spring force ranges from 1 pound initial end force to 10 pounds final end force, making it suitable for light-duty hold and locate functions. The maximum plunger diameter is 0.248 inches with a plunger projection of 0.25 inches. Installed by machinists, maintenance technicians, and mechanical assemblers in production fixtures, jigs, and equipment panels.

This plunger is used in applications requiring repeatable manual positioning, such as machine tool fixtures, industrial enclosures, and equipment adjustment mechanisms. The non-locking plunger design allows the spring-loaded tip to retract and re-engage under hand pressure. The knurled knob head suits installations where the plunger must be adjusted frequently during operation or setup. Typical environments include light manufacturing, automation equipment, and mechanical assemblies where a threaded body can be installed into a tapped hole.

Key Features

• Non-locking spring-loaded plunger for quick manual indexing and positioning
• Knurled knob head allows tool-free adjustment with positive hand grip
• 1/2-13 thread with 0.875-inch thread length for standard tapped-hole installation
• Spring end force range of 1 pound initial to 10 pounds final for light-duty hold applications
• Maximum plunger diameter of 0.248 inches with a 0.25-inch plunger projection
• Locking element included for secure body retention once positioned in the mounting hole

Compatibility

Designed as a standard-thread replacement or new-install knob handle plunger for equipment with a 1/2-13 tapped mounting hole requiring a non-locking spring plunger with a knurled knob actuator.

Installation Notes

Installation is performed by threading the plunger body into a properly tapped 1/2-13 hole using hand pressure or a wrench on the body, not on the knob head. Verify the mating hole depth and thread engagement before fully seating the component. Engage the locking element per the assembly design to prevent the body from backing out under vibration. No special tools or trade licensing are required, though standard machining and assembly practices apply.