Brass Molding Inserts

Tuoyuan Metal molding inserts are dual-hexagon internal threaded brass inserts manufactured via CNC precision turning. As a core custom fastener product of our factory, these are widely embedded into plastic, injection molding, and die-casting parts to boost connection strength and wear resistance. All brass inserts support drawing & sample customization, with mass production capacity over 100 million precision metal parts annually. We supply standard and custom brass molding inserts to industrial, automotive, new energy and electronic clients across 20+ global regions.

Feature of Brass Molding Inserts

High Hardness and Wear Resistance: Formulated with premium copper-zinc-lead alloys to withstand repeat high-torque fastening cycles without thread stripping, gauling, or micro-cracking.

Superior Thermal Stability: Excellent heat dissipation profiles prevent local thermal degradation or stress-crazing in sensitive plastics during hot-melt staking installation.

Double-Hex Flange Geometry: The symmetrical hexagonal configuration at both ends serves as high-resistance dual shoulders that mechanically arrest torque-out and pull-out stresses during rough service conditions.

Clean internal Threads: The chamfered entry leads on internal threads eliminate burrs, facilitating rapid automatic automated screw assembly.

Metric Threads

Universal metric internal threads for European, Asian and domestic equipment.

Common standard sizes: M3, M4, M5, M6, M8, M10.

H2: Surface Finish & Coating for Brass Molding Inserts.

Raw brass finish is our standard option, and customized surface treatments are supported as required:

Polished Brass Finish

High surface hardness and outstanding wear resistance.

Mirror smooth metal luster, suitable for decorative plastic molding parts.

Protective Anti-Oxidation Coating.

Dense durable surface film, anti-rust and anti-oxidation.

Strong resistance to chemical corrosion and surface abrasion for long service life.

Industrial Case Studies and Client Feedback

Case 1: Automotive Electronic Control Module (USA)

Application: Double-Hex Custom M4 Inserts embedded inside glass-fiber reinforced PA66 engine housings.

Batch Quantity: 4,500,000 pieces.

Recorded Data: Torsional torque-out threshold surpassed 8.4 Nm; 0.00% crack propagation detected across long-term thermal cycle testing.

Case 2: Medical Device Monitoring Enclosure (Germany)

Application: Low-lead nickel-plated M3 Brass Molding Inserts.

Recorded Data: Achieved 100% thread clearance rate via automated optical sensor sort verification.

Technical Performance

Product Structure and Appearance

Tuoyuan Metal brass molding inserts are custom threaded hardware made for embedding into plastic, resin and composite materials. Once installed inside molded parts, they create durable internal female threads that support long-term reliable assembly.

Each insert comes with dual hexagonal flanges at both ends and a seamless smooth cylindrical body in the middle. The double hexagon design locks firmly inside plastic substrates, effectively resisting pull-out force and rotational torque during repeated assembly and disassembly.

Common installation ways: Thermal heat staking, ultrasonic pressing insertion, direct plastic injection overmolding.

Optional raw brass materials: Standard HPb59-1 brass, low-lead C3604 brass, ASTM C36000 free-cutting brass.

About Tuoyuan Metal

Qingdao Tuoyuan Metal Co., Ltd is a certified high-tech factory focusing on all kinds of precision metal processing. Our service covers CNC turning, milling, stamping and customized surface finishing.

We own a 5,000 square meters modern production workshop. The whole production flow is tracked and managed by digital ERP system. Our yearly output of precision metal hardware surpasses 100 million pieces, including brass molding inserts and other custom fasteners.

FAQ

Q1: Can Tuoyuan Metal manufacture custom inserts from proprietary engineering drawings?

A1: Yes. We offer fully integrated OEM/ODM fabrication capabilities based on your 2D blueprints (PDF / AI / CAD) or 3D step models.

Q2: How does your factory prevent defective threads from shipping to clients?

A2: Along with routine on-machine caliper checks, we pass finished batches through high-speed automated optical sorting machinery. This checks internal thread consistency, total height lengths, and shoulder step diameters to filter out outliers before final packaging.

Q3: What industries commonly use your brass molding inserts?

A3: Widely applied in automotive manufacturing, industrial machinery, medical equipment, communication electronics, new energy, architectural hardware, rail transit and ocean engineering fields.

Q4: Which countries are your main customers for brass molding inserts?

A4: Our products are exported to over 20 countries and regions. Core market share breakdown: North America 60%, Russia 16%, Germany 10%, Eastern Europe 5%, Middle East 5%, Southeast Asia, South America and East Asia account for the rest.