Gibraltar HCP5659-G Hard Core Pin 3/8 in Steel

Product Description

The GIBRALTAR HCP5659-G is a hard core steel pin designed for secure fastening and alignment applications in fabrication, tooling, and general industrial assembly. With a 3/8 inch pin diameter and 6 inch overall length, this pin delivers the rigidity and dimensional accuracy that machinists and fabricators depend on. The hardened steel construction resists deformation under load, making it suitable for repetitive use in jigs, fixtures, and press-fit assemblies. A 5/8 inch head diameter provides a positive stop and simplifies both installation and removal during setup operations.

This hard core pin is used in machine shop environments, production fixtures, and assembly tooling where precise part location is required. It is appropriate for both light-duty and moderate-load applications in industrial and manufacturing settings. The pin is typically installed by machinists, tool and die makers, or maintenance technicians working with alignment-critical components. The 5-3/4 inch pin length and 1/4 inch head height make it well suited for through-hole and stepped-bore configurations common in fixture work.

Key Features

• Hard core steel construction resists deformation and wear under repeated use
• 3/8 inch pin diameter for precise hole alignment and location
• 6 inch overall length with 5-3/4 inch usable pin length
• 5/8 inch head diameter provides a positive stop surface
• 1/4 inch head height for controlled seating depth
• Sold individually for single-piece replacement or quantity builds

Compatibility

Designed as a standard hard core locating pin for use in jigs, fixtures, and tooling assemblies requiring a 3/8 inch diameter pin with a 6 inch overall length.

Installation Notes

Hard core pins are typically installed by machinists or tool and die technicians using a press or mallet. De-energize and lock out all machinery before servicing or replacing pins in powered fixtures. Verify bore diameter and tolerance before installation to ensure proper fit and prevent galling. Do not force an oversized pin into an undersized bore, as this can damage both the pin and the workpiece.