Gibraltar MT7683-G Straight Ejector Pin 4.5mm 125mm Steel

Product Description

The GIBRALTAR MT7683-G is a straight ejector pin used in injection mold tooling and die assemblies to push finished parts free from the mold cavity at the end of each cycle. Machined from steel with a nitride finish for surface hardness and wear resistance, this pin measures 4.5 mm in diameter with a 125 mm overall length and a 122 mm pin length. The 8 mm head diameter and 3 mm head height seat securely in the ejector retainer plate. Mold makers, toolroom machinists, and die maintenance technicians specify this type of pin for precision ejection applications where consistent dimensional tolerances are required cycle after cycle.

This ejector pin is suited for use in plastic injection molds, die casting tooling, and stamping dies in both production and prototype environments. It is a direct-replacement style pin intended for toolrooms, mold shops, and maintenance departments performing routine pin replacements or new mold builds. The nitride finish improves galling resistance in high-cycle mold applications where uncoated pins wear prematurely.

Key Features

• 4.5 mm pin diameter with 125 mm overall length for precise cavity ejection
• 122 mm usable pin length accommodates standard ejector plate setups
• 8 mm head diameter and 3 mm head height for positive retainer plate seating
• Steel construction with nitride finish for hardness and wear resistance
• Straight ejector pin style — no step, shoulder, or blade geometry
• Sold individually; minimum order quantity of 1

Compatibility

Designed as a standard straight ejector pin replacement for injection mold and die tooling that accepts a 4.5 mm diameter pin with an 8 mm head and 125 mm overall length.

Installation Notes

Installation is performed by toolroom machinists or mold maintenance technicians with the mold de-energized, cooled, and safely secured in a press or on a mold bench. Confirm ejector plate bore diameter and head pocket dimensions match this pin before installation. Inspect the ejector guide bushings and retainer plate for wear before fitting new pins. Follow the mold manufacturer's disassembly and torque procedures for ejector plate fasteners.