Gibraltar MT7687-G Straight Ejector Pin 4.5mm 315mm Steel

Product Description

The GIBRALTAR MT7687-G is a straight ejector pin used in injection mold tooling to push finished parts out of the mold cavity at the end of each cycle. Machined from steel with a nitride finish for wear and corrosion resistance, this pin measures 4.5 mm in diameter with a 315 mm overall length, a 312 mm pin length, an 8 mm head diameter, and a 3 mm head height. The nitride surface treatment extends service life in high-cycle mold environments. It is sold individually and is suited for toolmakers, mold maintenance technicians, and precision machinists working in production or repair settings.

This ejector pin is used in plastic injection molds where a straight pin configuration is required. It fits applications calling for a 4.5 mm diameter pin with a flanged head for positive retention in the ejector plate. Typical use cases include new mold builds, mold repair, and pin replacement during scheduled maintenance. The steel construction handles the compressive and bending loads common in standard injection molding cycles across both prototype and production tooling.

Key Features

• Straight ejector pin configuration with flanged head for ejector plate retention
• 4.5 mm pin diameter and 312 mm pin length for precise dimensional fit
• 8 mm head diameter and 3 mm head height for positive seating in the ejector plate
• Steel construction handles cyclic compressive and lateral loads
• Nitride finish improves surface hardness and corrosion resistance
• Sold individually with no minimum order beyond one unit

Compatibility

Designed as a direct-fit replacement or new-build component for injection molds requiring a straight ejector pin with a 4.5 mm diameter and 315 mm overall length with a standard flanged head.

Installation Notes

Installation is performed by toolmakers or mold maintenance technicians during mold assembly or repair. The mold should be fully cooled and all hydraulic or pneumatic clamp pressure relieved before ejector plate disassembly. Pins should be inspected for straightness before installation, as a bent pin can cause galling in the pin bore. Ensure the head seats fully and flush in the ejector plate counterbore before closing the retainer plate.