Gibraltar HEP3517-G Shoulder Ejector Pin 1/16 in Steel

Product Description

The GIBRALTAR HEP3517-G is a shoulder ejector pin designed for use in injection molds and die casting tooling. It features a 1/16 inch pin diameter, a 1/4 inch head diameter, and a 14 inch overall length, making it suitable for applications that require precise part ejection in deep or long mold cavities. Constructed from steel with a nitride finish, this pin offers improved surface hardness and wear resistance for extended service life in high-cycle mold environments. Installation is performed by toolmakers and mold technicians as part of mold build or maintenance operations.

This shoulder ejector pin is used in plastic injection molds, die casting dies, and similar tooling where controlled ejection of formed parts is required. The shoulder design provides positive seating against the ejector retainer plate, ensuring consistent pin positioning during each cycle. The nitride finish reduces friction and galling at the pin-bore interface, which is especially valuable in long-run production tooling.

Key Features

• Shoulder ejector pin type for positive retainer plate seating
• 1/16 inch pin diameter with 1/8 inch shoulder diameter and 1/2 inch shoulder length
• 1/4 inch head diameter and 1/8 inch head height for secure retention
• 14 inch overall length with 13.5 inch pin length for deep-cavity mold applications
• Steel construction with nitride finish for wear resistance and reduced friction

Compatibility

Designed as an OEM-style replacement or stock component for injection mold and die casting ejector systems requiring a shoulder ejector pin with a 1/16 inch pin diameter and 14 inch overall length.

Installation Notes

Shoulder ejector pins are installed and serviced by toolmakers or mold technicians during mold build or planned maintenance. Always ensure the mold is fully cooled, de-pressurized, and locked out before accessing the ejector assembly. Verify that the pin bore diameter and shoulder pocket in the retainer plate match the pin dimensions before pressing the pin into place. Forcing an improperly sized pin can damage the bore or the retainer plate.