Custom Brass Threaded Inserts Manufacturer | CNC Brass Inserts China

Custom Brass Threaded Inserts Manufacturer | CNC Brass Inserts China
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High-precision brass inserts for plastics and metal. Grades H59/H62/H65. ±0.01mm tolerance. Rapid prototyping & mass production. ISO 9001:2015 certified.
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Custom Brass Threaded Inserts Manufacturer & Supplier

 

Professional custom brass threaded inserts with high precision, diverse specs and reliable one-stop manufacturing service.

Brass Threaded Inserts Manufacturer
 

 Material Grades: High-purity H59, H62, H65, and C3604 brass.

 

 High Precision: CNC turned tolerances held to ±0.01mm.

 

 Versatile Integration: Optimized for heat staking, ultrasonic, or molded-in.

 

 Thread Standards: Metric, UNC, UNF, and BSW specifications.

 

 Surface Finish: Options for nickel plating, tin plating, or natural finish.

 

 Fast Turnaround: DFM feedback in 24h; prototype shipping in 3-7 days.

 

 Scalable Production: 100% inspection for batches from 1 to 100,000+ pcs.

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Product Overview & Machining Capabilities

 

Xiamen Dazao Machinery produces high-performance brass inserts designed for high-strength mechanical fastening in substrates including plastics, wood, and light metals. Unlike standard off-the-shelf fasteners, our custom brass threaded inserts are engineered via precision CNC machining service and thread rolling to ensure maximum torque-out and pull-out resistance.

 

By utilizing brass threaded inserts for metal and plastics, engineers can incorporate durable, reusable threads into low-density materials, significantly increasing the service life of the end-product. Our factory specializes in complex knurling patterns-including diamond, straight, and cross knurls-to provide superior mechanical anchoring in specialized industrial components.

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Knurled Brass Inserts
Metric Brass Inserts

Technical Specifications & Material Parameters

 
Parameter Specification Details
Available Materials Brass H59, H62, H65, H68, H70, C3604, C36000
Thread Sizes M1.4 to M20 (Metric), #0 to 3/4" (Imperial/UNC/UNF)
Machining Process CNC Turning, Automatic Lathe Machining, Thread Rolling
Dimensional Tolerance Standard: ±0.05mm; Precision: ±0.01mm
Surface Roughness Ra 0.4 to Ra 1.6
Installation Methods Ultrasonic, Heat Staking, Injection Molding, Cold Press-in
Secondary Finishing Surface treatment (Natural, Nickel Plating, Tin Plating, Zinc Plating, Passivation)
Inspection Equipment CMM, Thread Plug Gauges, Projector, Salt Spray Tester

 

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Customized Brass Inserts CNC Machining Process

 

People know the Brass Inserts for its superior strength, excellent machinability, and outstanding mechanical characteristics.

Dazao offers diverse CNC machining and metalworking services to produce components. Typical processing techniques encompass:

3 Axis CNC Milling Services
3 Axis CNC Milling
CNC Turn-Mill Combination Machining
CNC Turn-Mill Combination Machining
Wire EDM Machining Services
Wire EDM
Sheet Metal CNC Laser Cutting
CNC Laser Cutting
Extrusion CNC Machining  Parts Services
Extrusion Machining
Sheet Metal Machining Parts Services
Sheet Metal Machining

 

Cylindrical Brass Inserts

Features of Brass Inserts

 

High Purity Material: Made of premium brass (H62, H65) with excellent conductivity and corrosion resistance.

 

High Precision Threads: CNC machined threads (Metric, UNC, UNF) ensure smooth assembly and high pull-out resistance.

 

Strong Anchoring: Specialized knurling patterns (Diamond, Straight, Cross) provide superior torque-out resistance.

 

Multiple Installation: Suitable for heat staking, ultrasonic, and molded-in applications.

 

Durable Performance: Wear-resistant and anti-aging, reducing long-term maintenance costs.

 

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Molded-in Brass Inserts
Press-in Brass Inserts
Ultrasonic Brass Inserts
Heat Staking Brass Inserts
Brass Insert Nuts
UNCUNF Brass Inserts
Flanged Brass Inserts
Custom Brass Inserts

Custom CNC Machined Brass Inserts Parts – Surface Finishing

 

Upgrade your Brass Inserts CNC parts with our surface finishes. We offer anodizing, polishing, and coating. These finishes improve corrosion resistance, protect against wear, and enhance appearance. This ensures long-lasting, high-performance parts.

· Chrome Plating                                         · Blue Zinc Plated

· PVD                                                           · Electrophoresis

· Nickel Plating                                            · As-Machined

· Multi-Color Anodized                               · Hard Anodizing

· Sandblasting                                             · Anodizing

· Iron black Anodizing                                 · Laser Carving

· Alodine                                                      · Passivation

· Etching                                                      · Brushed

· Black Oxide                                               · Polishing

· Powder Coating                                        · Spray Paint

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Brass Inserts for Plastic
 
Alodine Aluminum CNC Machining Parts

Alodine

Anodizing CNC Machined Parts

Anodizing

As-machined Aluminum CNC Machining Parts

As-machined

Bead blasted Aluminum CNC Machining Parts

Bead blasted

Black Oxide Aluminum CNC Machining Parts

Black Oxide

Brushing Aluminum CNC Machining Parts

Brushing

Electroplating Aluminum CNC Machining Parts

Electroplating

Polishing Aluminum CNC Machining Parts

Polishing

 

CNC Machined Brass Inserts: 12 Quality Inspection Steps

Learn how Dazao's quality control team maintains high standards. They check the size and appearance of every order during production. Should any issues arise, we will promptly address and resolve them, or handle them according to your preferred method.

DFM Evaluation

DFM Evaluation

Prior to CNC machining, engineers perform a DFM evaluation to detect and address possible problems beforehand. This process optimizes designs for efficient production, minimizes errors, and lowers machining expenses.
Dimensional Tolerance Determination

Dimensional Tolerance Determination

Check if the parts meet the set size limits. Make sure the design is technically sound. Improve the manufacturing process to meet your quality standards and keep costs low.
Material Evaluation

Material Evaluation

For many years, we have built strong and reliable partnerships with our material suppliers. We can provide third-party inspection reports from companies like SGS, CTI, and TUV.
CNC Machining Production

CNC Machining Production

Our committed team monitors order progress, meticulously documenting each production cycle. We transparently share photos and videos with clients, ensuring you stay updated on the machining process.
FQC Detection

FQC Detection

In the machining production process, we check dimensional tolerance every two hours. We also examine the first article to ensure it meets design and quality standards.This ensures process stability, product uniformity, and enhanced production efficiency.
SPC / CKP

SPC / CKP

Conduct statistical evaluations to oversee and regulate the production process, delivering inspection reports.
Issue Detected

Issue Detected

If any problems, flaws, or compliance issues arise during machining, the team holds a quick meeting to address them.
Problem Handling

Problem Handling

Respond in 30 minutes, offer a solution in 2 hours, and fix the issue in 24 hours.
Outgoing Quality Inspection

Outgoing Quality Inspection

Before the factory dispatches CNC components, the team performs a complete dimensional inspection based on customer specifications. The team issues inspection reports before advancing to the subsequent processing phase.
Surface Finishing CNC parts

Surface Finishing

Beyond traditional surface treatments, numerous specialized surface treatments are available. We employ a dedicated SQE to oversee and manage every step within the surface treatment facility. Once the products return to our workshop, their appearance undergoes a thorough 100% inspection.
Comprehensive Inspection

Comprehensive Inspection

Quality control specialists will inspect the components at every step. They will use testing equipment like 3D and 2D projectors, height gauges, thread gauges, and roughness gauges.Offering inspection report with full dimensions for each part.
CNC Parts Packaging

Packaging

Numerous methods exist to pack items, preventing damage, ensuring easy transport, and being eco-friendly. We accept customer customization, often using pearl cotton and bubble wrap.

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Brass Inserts for Wood

Adaptable Production Timeline

We tailor production timelines for different projects to guarantee we fulfill your brass inserts CNC machining parts requirements.

 

Project Category Completion Timeline
Immediate high-Accuracy Samples 24-Hour Turnaround
CNC Brass Prototype Fabrication Basic Components 1–3 days, Intricate Components: 3–7 days
Molding Specifications Mold Creation Finished in 5 days, with samples provided within 7 days
High-Volume Production Lead times for high-volume production depend on how complex the parts are. They usually range from 2 to 4 weeks. We consistently meet customer deadlines.

 

For urgent projects, contact us promptly for accelerated processing.

Ordering Process for CNC Machined Brass Inserts

Submit Your CAD Design File

Submit Your CAD Design File

Upload your 2D or 3D designs directly. You can use IGS, PDF, or STEP formats. You can also give project details on the quotation page.. Ensure all submissions include a signed confidentiality agreement.

Quotation and DFM Evaluation

Quotation and DFM Evaluation

We will return the design within 12 hours for a manufacturability assessment and instant quotation.

Initiate Manufacturing

Initiate Manufacturing

After the order is finalized, we will commence the manufacturing process according to your CAD blueprint.

Your Machined Parts Have Been Received

Your Machined Parts Have Been Received

The aluminum prototype parts will be ready in a few days. We will send them to you using your chosen shipping method.

CNC Machining Workshop

 

Located in Tongan District, Xiamen, Fujian Province, China,has own factory cover an area of 3300 ㎡. Passed ISO9001:2015 & SGS in 2007. Passed ISO IATF 16949 in 2026.

 

We offer many services, including CNC turning, milling, die casting, stamping, and injection molding. We can use materials like stainless steel, aluminum, titanium, wood, plastics, and ceramics. We also provide surface treatments such as polishing, brushing, sandblasting, anodizing, PVD, DLC, and plating.

 

Dazao has over 100 skilled workers and more than 100 advanced machines. We offer customers a complete solution. This includes design, technical drawing support, manufacturing, assembly, and shipping.

 

Our commitment to quality is unwavering, from raw material to finished products, Dazao implements a strict quality control system. We fully inspect each product before shipping. This ensures the quality meets the highest standards. With our professional experience, many industries use our products.

 

Xiamen Dazao Machinery Co., Ltd. is your trusted partner in innovation and quality. We look forward to building a long-term business together and exceeding your expectations with our expertise and commitment.

CNC Machining Workshop
 
100+
Sets of Machine
116+
Countries Shipped
100,000+
Parts Manufactured
All Kinds of Pin Gauge
Micrometer Caliper
Surface Roughness Tester
Tensile Testing Machine
Sclerometer
Salt Fog Test Machine
Run-Out Instrumen
Metal Material Analyzer Machine
Altimeter
2D Measuring Projector
3D CMM
Constant Temperature And Humidity Box
 
 
 
 

 

Industrial Applications for Brass Inserts

Dazao's brass screw inserts are critical components in demanding environments where structural integrity is non-negotiable:

Electronics & IT

Electronics & IT

Threaded standoffs for PCB mounting and handheld device housings.

Automotive Systems

Automotive Systems

Inserts for intake manifolds, interior trim, and lighting assemblies.

Medical Devices

Medical Devices

Durable threads for diagnostic equipment and laboratory instrument casings.

Industrial Automation

Industrial Automation

End-of-arm tooling (EOAT) components and sensor mounts.

Consumer Goods

Consumer Goods

High-strength fasteners for 3D printed parts and furniture hardware.

Plastic Industry

Plastic Industry

Injection molded parts, electronic plastic housings, and home appliances.

Assembly and Packaging Services for CNC Machined Brass Parts

 

We provide expert assembly and reliable packaging for CNC machined parts made from Brass. This ensures a precise fit, good performance, and safe delivery. We aim to maintain part quality and meet customer expectations.

CNC Machining Parts Assembly

Assembly

Below is the procedure for assembling Brass alloy components at the DAZAO CNC machining facility:

 

· Requirements Assessment – Validating the client's specifications, tolerances, and functional needs for each component.

· Component Examination – Evaluating each piece individually for dimensional precision, fit, alignment, and quality.

· Pre-assembly Organization – Arranging and preparing parts, fasteners, and sub-assemblies for the assembly process.

· Assembly Process – Joining screws, bolts, pins, or interlocking parts using either manual or automated techniques.

· Mid-assembly Inspection – Conducting fit and alignment checks during assembly to ensure proper mechanical and functional connections.

· Final Testing and Inspection – Ensuring that the assembled components comply with all performance, durability, and functional criteria.

· Packaging and Shipping – Securely packaging the assembled parts to prevent damage during transit.

 

This systematic approach guarantees the precision, functionality, and safe delivery of 7050 aluminum CNC components.

Packaged

For CNC machined components crafted from Brass alloy, we provide a range of packaging options. They carefully package and cushion each item. This prevents damage during shipping. It ensures that all parts arrive safely and in perfect condition.

 

Here are our packaging techniques for CNC Brass components:

 

· Bubble wrap – Offers cushioning to shield parts from scratches and minor impacts while in transit.

· Foam padding – Provides shock absorption for delicate or fragile items.

· Anti-static bags – Protects sensitive electronic components or coated parts from electrostatic discharge damage.

· Sturdy cardboard boxes – Delivers structural protection for assembled components, ensuring their security.

· Wooden crates – Delivers maximum protection for heavy, large, or fragile items during shipping.

· Shrink wrap – Keeps parts tightly bundled, clean, and safeguarded from dust or moisture.

 

These methods are often combined based on the size, material, and fragility of the components to guarantee safe delivery.

CNC Machining Parts Package
 

ISO 9001:2015 Certified Factory

 

DAZAO has received ISO 9001:2015, IATF 16949, and RoHS certifications. This ensures our brass alloy parts are high-quality, traceable, and reliable. These certifications demonstrate our commitment to precision, safety, and industry standards, giving our customers confidence in every custom part we deliver.

 

· ISO 9001: 2015

· IATF 16949: 2015

· ROHS Directive

· SGS Certifications

· 26 Patent Certifications

· Inspection report

· Full dimension report

· Material Test Report

DAZAO Certified,Patents,Business Licenese

FAQs About Brass Inserts CNC Machining

 

 

Brass Threaded Inserts

01.What is the MOQ for custom brass threaded inserts?

Dazao Machinery supports both prototyping and mass production. Our minimum order quantity (MOQ) starts at 1 piece for R&D projects. For mass production, we leverage high-speed automatic lathes to provide cost-effective solutions for batches exceeding 10,000 units.

02.Which brass grade is best for inserts used in plastics?

C3604 or H59 brass is typically recommended due to its excellent machinability and corrosion resistance. These grades allow for sharp, precise knurling patterns that ensure the brass inserts for plastics remain secure under high torque loads.

03.Can you provide brass threaded inserts for metal substrates?

Yes. While many inserts are for plastics, we manufacture heavy-duty brass threaded inserts for metal (such as aluminum or magnesium alloys). These are often used as thread reinforcements in custom aluminum parts to prevent wear in frequently disassembled components.

04.What surface treatments do you offer for brass fasteners?

We provide natural finish (cleaned and degreased), nickel plating for enhanced wear resistance, and tin plating for improved solderability. Passivation is also available to prevent oxidation during long-term storage or sea freight.

05.How do you ensure thread compatibility for international orders?

We machine threads strictly according to international standards, including ISO Metric, Unified Coarse (UNC), and Unified Fine (UNF). Every batch is verified using calibrated thread gauges to ensure 6H or 2B fit classes as per your CAD specifications.

06.What file formats are required for a quotation?

Please provide 3D files in STEP, STP, or IGS format for geometry analysis. 2D PDF drawings are also required to identify critical tolerances, thread specifications, and surface finish requirements.

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