Custom precision-machined core pins on brushed steel

Precision Mold Components, Made in the USA

Precision Core Pins manufactures core pins, mandrels, ejector pins, and blades for injection molds and die-cast tools. Every part is custom, precision ground to your print in Orange County, California, for medical, aerospace, and electronics work.

What we make

Each family below has its own page with applications, materials, and tolerance detail.

  • Core Pins — form internal features, holes, and cores in molded and cast parts, in diameters down to 0.004 in.
  • Mandrels — long, precision-ground shafts up to 12 feet for coring, forming, and support.
  • Ejector Pins — push finished parts off the core on every cycle.
  • Blades — flat ejectors for ribs, gussets, and thin-wall features.

Built for tight-tolerance work

Everything we make is custom. Send a drawing or a sample and we match it: diameter, length, head style, and point geometry. We precision grind the working surfaces, and we hold ground diameters as tight as 0.00005 in.

Industries we serve

We supply mold makers, molders, and die casters building tooling for medical, aerospace, and electronics OEMs. Components are made in the USA and shipped nationwide.

Request a quote

Send your print or sample for a quote. Call (714) 540-5621 or request a quote.