Ejector Pins
An ejector pin pushes the finished part off the core when the mold opens. Precision Core Pins manufactures custom ejector pins to your print in Orange County, California.
Made to your print
We match diameter, overall length, head style, and point geometry to your drawing or sample, in inch or metric. Straight pins, shoulder pins, and custom configurations are all made to order.
Fit
The working diameter is precision ground to fit the hole. We hold ground diameters as tight as 0.00005 in.
Common applications
Plastic injection molds and die-cast dies across medical, aerospace, and electronics tooling, including high-cavitation molds.
Frequently asked questions
What is an ejector pin? An ejector pin is a pin that pushes the finished part off the core when the mold opens.
Inch or metric? Both. We make to imperial and metric (DIN) prints, and we can reverse a sample to a print when there is no drawing.
Can you match an existing pin? Yes. Send a sample and we reverse it to a quotable print.
What causes ejector pin marks on a part? Usually a pin that sits slightly proud or recessed, a worn fit that flashes, or too few pins spreading the ejection load. The fixes are the right fit, a straight true pin, and the right pin count. (More on ejector pin failure.)
What tolerances can you hold? We hold ground diameters as tight as 0.00005 in. The exact tolerance depends on the feature, so send your print and we will confirm what we can hold.
Request a quote
Send your print or sample. Call (714) 540-5621 or request a quote.