Gibraltar HEP3504-G Shoulder Ejector Pin 3/64 in Steel

Product Description

The GIBRALTAR HEP3504-G is a shoulder ejector pin used in injection mold tooling and die casting applications. It features a 3/64 inch pin diameter, a 1/4 inch head diameter, and an overall length of 6 inches, with a 5.5 inch pin length and a 1/2 inch shoulder length. Constructed from steel with a nitride finish, this pin delivers hardness and wear resistance suitable for high-cycle mold operation. The shoulder design provides a precise locating reference within the mold plate, ensuring consistent ejection stroke alignment. Tool and die makers, mold technicians, and maintenance machinists are the primary installers of this component.

This shoulder ejector pin is suited for use in plastic injection molds, die casting dies, and similar tooling where controlled ejection of finished parts is required. The 1/8 inch shoulder diameter and 1/2 inch shoulder length allow it to seat positively in a counterbored ejector plate without the need for additional retention hardware. It is appropriate for both production tooling and prototype mold builds in shop and manufacturing environments.

Key Features

• Shoulder ejector pin design provides positive seating and alignment in counterbored ejector plates
• 3/64 inch pin diameter for fine-detail ejection in tight-tolerance mold cavities
• 6 inch overall length with 5.5 inch pin length accommodates standard mold plate stacks
• 1/2 inch shoulder length and 1/8 inch shoulder diameter for secure plate engagement
• Steel construction with nitride finish for hardness and corrosion resistance in high-cycle use
• 1/4 inch head diameter and 1/8 inch head height conform to standard ejector plate retention geometry

Compatibility

Designed as an OEM-style replacement or direct-fit component for standard injection mold and die casting ejector plate assemblies requiring a shoulder ejector pin with a 3/64 inch pin diameter and 6 inch overall length.

Installation Notes

Installation is performed by qualified tool and die makers or mold maintenance technicians. The mold must be fully de-energized, cooled, and separated before ejector pin replacement. Pins should be inspected for burrs or dimensional variance before seating in the ejector plate; forced installation can damage the bore or the pin shoulder. Follow shop safety procedures and applicable tooling standards when working with mold components under spring or hydraulic preload.