About Brass Moulding Inserts
Brass moulding inserts are specialized threaded fasteners designed to beembedded into plastic partsa typically via heat, ultrasonic, or in-mouldtechniquesa to provide strong, permanent, and wear-resistant metal threads. Theyenhance durability, support high pull-out loads in industries like automotive,electronics, and medical devices.
Design Features:
- Knurling: Most inserts feature diamond or straight knurling to enhance grip and prevent rotation within the plastic.
- Shapes: Typically, round or hexagonal.
- Types: Available in blind (closed end) to prevent plastic seepage, or through-hole (open end) for long bolts.
Installation Methods: - Heat/Ultrasonic Insert: Installed after molding by melting the plastic around the insert using heat or ultrasonic waves.
- In-Mold Inserts: Placed into the mold before injection, allowing plastic to flow around them.
- Press-In/Self-Tapping: Pushed or threaded into a pre-molded hole without additional heat.
Advantages: Provide high torque resistance, allow for repetitive assembly/disassembly, and are corrosion-resistant.
Applications: Crucial in assembling consumer electronics, automotive interiors, furniture, and plastic enclosures.
Material Grade & Standards:
Commonly made from free-cutting brass (C36000), offering superior machinability for detailed knurls.