Gibraltar LBR-129 Quick-release Pin 5/16 in 4 in 4130 Steel

Product Description

The GIBRALTAR LBR-129 is a quick-release pin with a button handle, designed for fast, tool-free insertion and removal in industrial, mechanical, and fabrication applications. The pin measures 5/16 inches in diameter with 4 inches of usable length. It is machined from 4130 alloy steel and finished with a zinc plating for corrosion resistance. This type of fastener is commonly installed by maintenance technicians, millwrights, and fabricators wherever frequent disassembly or adjustment is required without the use of conventional threaded fasteners.

The LBR-129 is suited for use in jigs, fixtures, carts, assemblies, and equipment panels where a pinned connection needs to be engaged or released repeatedly. Its button-style handle allows single-hand operation. The inch-system dimensions make it a standard fit for U.S.-spec machinery and fabricated frames. It ships as a single-piece unit and is appropriate for both light industrial and trade service environments.

Key Features

• Quick-release button handle allows tool-free pin insertion and removal
• 5/16 inch pin diameter for standard inch-system hole patterns
• 4 inches of usable length accommodates moderate material stack thickness
• 4130 alloy steel construction provides strength and durability
• Zinc-plated finish adds corrosion resistance for service and shop environments

Compatibility

Designed as a standard inch-series quick-release pin for use in jigs, fixtures, and mechanical assemblies requiring a 5/16 inch diameter through-hole.

Installation Notes

Installation requires a clean, properly sized 5/16 inch through-hole in the mating assembly. No tools are required for pin insertion or removal during normal use. Ensure the hole is free of burrs or debris that could obstruct the release mechanism. Follow all applicable equipment lockout and tagout procedures before servicing pinned assemblies.