Insert Molding Manufacturer in China

Plastic Make Co manufactures insert molded plastic parts where metal inserts, threaded inserts, pins, bushings, contacts, terminals, or custom components are molded into plastic. Insert molding can improve strength, assembly reliability, electrical function, and long-term fastening performance.

Common Insert Molded Parts

  • Plastic housings with brass threaded inserts.
  • Electrical connectors, terminals, and embedded contacts.
  • Plastic knobs, handles, brackets, and mounting parts with metal hardware.
  • Medical, automotive, electronics, and industrial plastic components.

Design Points

Insert molding requires careful control of insert position, plastic flow, tool holding features, heat transfer, material shrinkage, and pull-out strength. Before tooling, we review insert geometry, knurling, undercut features, tolerance, plating, corrosion risk, and whether manual or automated insert loading is suitable.

Quality Checks

Inspection can include insert position, thread gauge check, torque or pull-out testing, appearance review, flash check, dimensional inspection, and assembly fit. For export orders, packing should protect both plastic surfaces and metal insert areas from scratches, contamination, or deformation.

Quote Information

Send plastic part drawings, insert drawings, material, insert material, quantity, expected load or torque, assembly notes, and target market requirements. If you already have insert suppliers, we can review whether those inserts are suitable for molding.

For a practical project example, see our insert molded plastic part case study.

Start Your Injection Molding RFQ

Send drawings, CAD files, material, quantity, color, finish, delivery target, and destination country for review.

Request Injection Molding Quote