Brass Stamping Parts Wholesale

Brass Stamping Parts

-- Steady & Reliable Manufacturer --

Yuyao Hongli Optoelectronics Co., Ltd. is a specialized source manufacturer of Brass Stamping Parts, delivering high-precision electrical terminals, switch contacts, decorative hardware, and plumbing fittings. Situated in Yuyao, Zhejiang, our 5,000-square-meter production facility houses high-speed progressive presses, in-die tapping units, and automated plating lines. We process premium brass alloys, including H59, H62, H65, and C2680, into intricate components featuring high electrical conductivity, excellent ductility, and natural corrosion resistance. Benefiting from over 20 years of custom metal stamping heritage, Yuyao Hongli offers end-to-end OEM manufacturing, from die development to high-volume output at direct-factory prices.

MANUFACTURING CAPABILITIES

Equipment and process capabilities

From mold design to batch stamping, we cover production needs of different tonnages and precision levels.

  • 01

    High-Speed Electrical Terminal Stamping

    Utilizing ultra-high-speed stamping presses up to 600 strokes per minute, we produce high-volume brass electrical terminals and pins with zero burrs and precise pitch control.

  • 02

    Automated In-Die Tapping & Threading

    We integrate in-die tapping systems within brass stamping dies to cut precise internal threads during the press stroke, eliminating secondary tapping costs.

  • 03

    Complex Bending & Contact Forming

    Multi-stage progressive dies form spring-loaded brass contact clips and connector pins with strict angular retention and dimensional consistency.

  • 04

    Bright Annealing & Heat Treatment

    Controlled atmosphere annealing furnaces stress-relieve formed brass components, preventing seasonal cracking and enhancing long-term material ductility.

SPEC · Overview of Key Equipment Parameters

Equipment TypeTonnage / SpecificationMachinable MaterialTypical Processing Thickness
High-Speed Terminal Press25T - 80T High-Speed StampingH59, H62, H65, C2680, C2600 Brass0.15mm - 2.0mm Brass Strip
Progressive Stamping Press45T - 160T Precision Punching PressHigh-Ductility Brass Alloys0.3mm - 3.5mm Heavy Gauge
In-Die Tapping UnitMulti-Spindle Servo TapperBrass Stamping StripsM1.5 to M8 Internal Threads
Vibratory Polishing Bowl500L High-Frequency Finishing UnitStamped Brass ComponentsMass Edge Deburring & Polishing
QUALITY CONTROL

Full-process quality control system

From incoming material inspection to full outgoing inspection, key processes are equipped with inspection points to ensure batch consistency.

Electrical Conductivity & Material Composition Analysis

Verifying alloy purity and electrical performance for current-carrying components.

  • EDX / XRF alloy composition testing to confirm copper/zinc ratios.
  • Electrical conductivity testing (% IACS rating verification).
  • Micro-Vickers hardness checks across form zones.

Thread & Optical Dimensional Inspection

Guaranteeing exact mechanical fit and thread integrity on stamped brass fittings.

  • Go/No-Go plug gauge inspection for 100% in-die tapped threads.
  • 2D optical profile projectors checking contact spring gap and critical dimensions.
  • Burr height measurement under 0.02mm optical limits.

Plating Thickness & Salt Spray Validation

Checking electroplated protective and conductive layers on brass surfaces.

  • XRF coating thickness measurement for tin, nickel, and silver plating layers.
  • Neutral Salt Spray (NSS) testing (up to 248 hours for nickel/tin plated parts).
  • Solderability testing (ASTM B545) for electrical PCB terminals.
SURFACE FINISHING

Surface treatment process

Depending on the usage environment and appearance requirements of the parts, we offer anti-corrosion, wear-resistant, or decorative surface treatment solutions.

Finishing ProcessApplicable MaterialPrimary FunctionTypical Application
Tin Plating (Matte / Bright)H62, H65, C2680 BrassEnhances solderability and protects against surface oxidationPCB terminal pins, automotive wire harness connectors, fuse clips
Nickel PlatingH59, H62 BrassProvides excellent wear resistance, corrosion barrier, and bright finishElectrical switch plates, door lock hardware, valve components
Silver / Gold PlatingHigh-Precision Brass ContactsDelivers maximum electrical conductivity and low contact resistanceRelay contact blades, audio connectors, battery spring contacts
Acid Pickling & PolishingAll Brass AlloysRemoves thermal scale, brightens natural golden color, and cleans oilDecorative hardware, plumbing fittings, decorative trim parts
Note: The above is a standard process list. Specific film thickness, color, and salt spray resistance rating can be customized according to customer drawings.
APPLICATIONS

Main application areas

Our products are widely used in industries that require high structural strength and precision consistency.

Electrical & Automotive Wire Connectors

High-conductivity brass terminals and clips engineered for low-resistance power transmission.

  • Automotive wiring harness male/female spade terminals
  • Relay socket terminals and fuse box clips
  • Grounding rings and battery terminal lugs

Switches, Relays & Circuit Breakers

Precision-stamped brass contact arms and blades built for frequent mechanical cycling.

  • Wall switch contact blades and terminal blocks
  • Circuit breaker current paths and spring plates
  • Power outlet contact clips and plug prongs

Plumbing & Decorative Hardware Fittings

Corrosion-resistant brass stamped washers, flanges, and decorative trim hardware.

  • Sanitary valve sealing washers and retainer rings
  • Decorative door hardware plates and escutcheons
  • HVAC flare fittings and copper-brass brackets
PRODUCTION / FACTORY ADVANTAGES

Factory production advantages

With its own factory and equipment, the company ensures stable delivery times and controllable costs.

20+ Years of Electrical Stamping Heritage

Yuyao Hongli offers extensive experience in high-speed terminal stamping, in-die tapping, and brass forming.

High-Speed Stamping & In-House Plating Options

Our facility combines high-speed press lines and surface finishing capabilities to meet strict delivery schedules.

100% Automated Optical & Thread Inspection

Integrated vision sorting machines ensure zero thread defects and precise terminal pin pitch.

CUSTOM MANUFACTURING PROCESS

Customized production process

From receiving drawings to batch delivery, standardized processes ensure traceability at every stage.

  • 1. Print Review & Alloy Selection

    Engineers evaluate electrical, mechanical, and spring requirements to select the correct brass alloy and temper.

  • 2. Tooling Design & In-Die Tapping Integration

    We design multi-station progressive dies featuring modular carbide inserts and automated thread-tapping units.

  • 3. High-Speed Tool Tryout & FAI Verification

    Trial stampings undergo conductivity testing, thread gauging, and 2D optical dimension checking for sign-off.

  • 4. Mass Stamping, Plating & Annealing

    High-speed presses stamp parts from brass coil stock, followed by continuous reel-to-reel or barrel plating.

  • 5. Optical Vision Sorting & Reel Packaging

    Finished terminals are reeled or boxed, passed through optical inspection, and packaged for automated assembly lines.

FAQ

Frequently Asked Questions

Here are some questions that clients often ask before cooperating with us.

What brass alloys do you commonly use for stamping parts?

We process H59, H62, H65, C2680 (Yellow Brass), C2600, and lead-free brass formulations for environmental compliance.

Can you stamp brass parts on continuous carrier reels?

Yes. We offer reel-to-reel stamping and plating, ideal for automated crimping and assembly operations.

How do you ensure threads produced by in-die tapping are accurate?

Our in-die tapping units feature electronic sensor monitoring and 100% optical plug-gauge checking during quality audits.

Are your brass stamping parts RoHS and REACH compliant?

Yes. We use certified low-lead and lead-free brass materials fully compliant with global RoHS and REACH directives.

About Us
Yuyao Hongli Optoelectronics Co., Ltd.
Yuyao Hongli Optoelectronics Co., Ltd.
Yuyao Hongli Optoelectronics Co., Ltd. is a comprehensive enterprise with over 20 years of experience in the manufacturing industry. Located in the Yangming Science and Technology Industrial Park of Yuyao, Zhejiang Province, it enjoys convenient transportation and a solid industrial foundation. As a famous China Brass Stamping Parts Suppliers and Brass Stamping Parts Factory, founded in 2000, formerly known as Yuyao Hongli Optoelectronics Educational Instruments Co., Ltd., the company is wholly owned by a natural person, with Xie Gang as the legal representative. Its registered capital of 500,000 yuan has been fully paid up, and it has maintained its continued development through stable operations.
Relying on a 5,000-square-meter modern factory and multiple stamping workshops, the company has built a diversified product system. Its core businesses cover the manufacturing, processing and wholesale and retail of educational instruments, optical instruments, household electric heaters, small household appliances, auto parts, hardware and plastic products, etc. At the same time, it operates and acts as an agent for the import and export trade of goods and technologies, and its products are sold at home and abroad.
The company brings together industry management elites and senior engineers to form a mature R&D and management team. Adhering to the business philosophy of "integrity and pragmatism," it is committed to providing customers with high-quality products and comprehensive after-sales service. Leveraging its diversified portfolio, certification guarantees, and import/export advantages, the company actively expands cooperation both domestically and internationally, and is willing to establish long-term and stable trade partnerships with partners from all sectors, continuously striving forward in the wave of intelligent and high-end development in the manufacturing industry.
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