Insert Molding

Insert molding service

Insert Molding (Insert Injection Molding)

Insert molding is an injection molding process where metal inserts, wires, or other components are placed in the mold before plastic injection. It’s ideal for improving strength, reducing fasteners, and combining multiple components into a single, assembly-ready part.

Typical Inserts

We support insert selection and part design for secure encapsulation and consistent results.

  • Threaded brass / steel inserts
  • Electrical terminals, pins, and contacts
  • Bushings, sleeves, and wear plates
  • Wire harness supports and embedded wires
  • Custom metal components (as required)

Service Process

  • DFM & Insert Planning

    Insert type, location, and retention features reviewed for strength, sealing, and manufacturability.

  • Molding & Integration

    Controlled placement and molding to encapsulate inserts and maintain dimensional stability.

Where Insert Molding Helps

Insert molding is widely used for parts that need strong threads, integrated electrical connections, or reduced assembly steps. It’s a reliable solution for improving product strength while keeping designs compact and cost-efficient.

Applications

Common use cases where insert molding improves performance and assembly speed.

  • Electrical connectors and terminal housings
  • Automotive brackets and mounting parts
  • Industrial handles, knobs, and housings
  • Sensor housings with integrated contacts

Key Highlights

Designed to improve strength, reduce assembly, and deliver consistent quality.

  • Improved part strength and reliability
  • Reduced fasteners and assembly operations
  • Better thread life compared to plastic-only threads
  • Cleaner design with fewer joined components