Threaded Brass Inserts

Threaded Brass Inserts are precision-engineered fastening components designed to provide durable and reliable threads in plastic, wood, and soft metals. Made from high-quality brass Material, these brass threaded inserts feature superior corrosion resistance, excellent conductivity, and outstanding dimensional stability. As a leading brass inserts manufacturer in China, we specialize in producing custom threaded brass inserts for a wide range of applications, offering exceptional machining accuracy, surface finish, and consistency.

Our brass inserts for plastic and brass inserts for thermoplastics are ideal for injection molding, 3D printing, and press-in installations. With advanced CNC machining, turning, and knurling processes, we ensure high-precision thread profiles that enhance both performance and durability in industrial and consumer products.

Key Features

• High Precision: Each insert is produced using advanced CNC machining to ensure consistent dimensional accuracy and smooth thread engagement.

• Strong Corrosion Resistance: The use of premium brass alloy guarantees excellent resistance against rust and oxidation, even in harsh environments.

• Versatile Installation: Available as brass knurled inserts, brass molding inserts, brass press-in inserts, and brass ultrasonic inserts for multiple assembly methods.

• Excellent Heat Resistance: Our brass heat set inserts and heat-resistant brass threaded inserts perform reliably under high-temperature applications such as injection molding.

• Customization Support: Tailor-made custom threaded brass inserts in various thread sizes, knurling types, and surface finishes to meet specific project requirements.

• Wide Material Compatibility: Suitable for plastics, thermoplastics, wood, and composite materials.

Manufacturing Process

1. CNC Turning & Milling: Precision machining ensures accurate internal and external threading.

2. Knurling Process: Provides enhanced grip for brass inserts for plastic and brass insert nuts.

3. Heat Treatment: Improves hardness and wear resistance for extended product lifespan.

4. Polishing & Surface Finishing: Achieves smooth surfaces and visual appeal.

5. Thread Inspection: Each piece is tested to meet international thread tolerance standards (ISO, DIN).

We apply strict control at every stage to ensure all brass threaded inserts meet high-performance requirements.

Material Selection

While brass remains the standard for threaded inserts due to its machinability and corrosion resistance, we also offer alternative materials based on application needs:

• Brass (CuZn alloy): Excellent strength, conductivity, and machinability.

• Carbon Steel: High tensile strength for demanding structural uses.

• Stainless Steel: Superior corrosion resistance for marine or outdoor environments.

• Aluminum Alloy: Lightweight and corrosion-resistant for aerospace and electronics.

Each material is carefully selected to balance strength, durability, and cost-efficiency.

Surface Treatment Options

To enhance durability and appearance, multiple finishing options are available:

• Polishing: Smooth surface with aesthetic shine.

• Nickel Plating / Chrome Plating: Corrosion-resistant protective layer.

• Zinc Plating: Economical protection for non-visible applications.

• Anodizing (for aluminum inserts): Enhanced hardness and decorative color options.

• Passivation: Improves oxidation resistance.

These finishes ensure our high precision brass inserts for plastic maintain excellent performance and longevity.

Precision & Quality Control

Our factory employs advanced inspection and measurement instruments to ensure every batch meets international quality standards:

• Tolerance Control: ±0.01 mm

• Surface Roughness: Ra ≤ 0.8 μm

• Inspection Equipment: Digital micrometers, optical comparators, thread gauges, CMM (Coordinate Measuring Machine).

• 100% Thread Inspection: Guarantees consistent fit and functionality for all metric brass threaded inserts and self-tapping brass threaded inserts.

Each product undergoes multiple inspections during and after production to ensure superior quality.

Applications

Our threaded brass inserts are widely used across various industries:

• Automotive Components – dashboard fittings, connectors, sensors.

• Industrial Machinery – fastening in plastic housings, electrical enclosures.

• Aerospace & Marine Equipment – lightweight and corrosion-resistant assemblies.

• Electronics & Communication Devices – mounting PCB and terminal connectors.

• 3D Printing & Injection Molding Parts – reinforced thread inserts for plastic prototypes and mass production.

Whether for threaded brass inserts for injection molding or brass inserts for 3D printing parts, our products guarantee strong mechanical anchoring and long-term reliability.

FAQ

Q1: Can you provide custom sizes and designs?
Yes, we offer custom threaded brass inserts tailored to your drawings or samples. OEM and ODM are both available.

Q2: What is your typical delivery time?
Standard models ship within 7–10 days. Custom orders depend on complexity, usually 15–25 days.

Q3: What thread standards do you support?
We manufacture according to Metric, UNC, UNF, BSW, and custom thread specifications.

Q4: Do you provide samples for testing?
Yes, samples can be provided free of charge; customers only need to cover freight costs.

Q5: What is your quality assurance process?
All fastener inserts undergo dimensional, mechanical, and surface inspections before shipment. Full inspection reports are available upon request.