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Precision Stamped Copper & Brass Flat Spring Contacts | OEM Leaf Clip Factory – SEME Hardware
Custom Precision Stamping Copper & Brass Flat Spring Contacts for Electrical & Electronic Applications
SEME Hardware specializes in manufacturing custom precision stamping copper and brass flat spring contacts for electrical, electronic, battery, and automotive applications. These metal leaf spring clips and contact springs serve as critical conductive components in switches, relays, battery terminals, circuit breakers, and connector assemblies. With high electrical conductivity, excellent spring properties, and corrosion resistance, our stamped flat springs ensure stable current transmission and reliable mechanical contact over millions of cycles.
Product Overview
Precision stamping flat springs, also known as leaf spring contacts or contact clips, are thin metal components fabricated through high-speed stamping processes from copper, brass, or beryllium copper strips. These parts feature specific curved or angled geometries that provide both electrical conductivity and mechanical spring force in a single integrated design.
Commonly used in battery holders, PCB connectors, push-button switches, and automotive wiring systems, these contact springs maintain consistent pressure between mating electrical interfaces, minimizing contact resistance and preventing arcing or intermittent connection failures. Our stamping production delivers tight tolerances, burr-free edges, and consistent mechanical properties across high-volume batches.
Core Product Advantages
High Electrical Conductivity
Made from high-grade copper, brass, or beryllium copper alloys, our stamped contacts deliver excellent current-carrying capacity and low contact resistance, ensuring efficient power transmission in demanding electrical systems.Superior Spring Performance
Engineered with optimized curved geometries, the flat spring contacts provide stable and consistent spring pressure over millions of deflection cycles, maintaining reliable electrical mating without fatigue failure.Corrosion & Oxidation Resistance
Selected copper alloys with optional surface plating (tin, silver, gold, or nickel) offer strong resistance to environmental oxidation, humidity, and chemical corrosion, extending service life in diverse operating conditions.Precision Stamping – High Consistency
Advanced high-speed stamping presses with in-process quality monitoring ensure tight dimensional tolerances (±0.05mm or better), burr-free edges, and consistent part geometry across large production runs.Custom Design & Engineering Support
We provide full OEM/ODM services – from material selection, geometric design, and prototyping to volume production – tailored to your current rating, contact force, and space constraints.
Technical Specifications
| Parameter | Details |
|---|---|
| Materials | Copper, Brass, Beryllium Copper, Phosphor Bronze (custom alloys available) |
| Processing | High-speed precision stamping, bending, forming, and trimming |
| Surface Plating | Tin, Silver, Gold, Nickel, or Anti-oxidation treatment (customizable) |
| Dimensional Tolerance | ±0.05mm or tighter (as per customer drawings) |
| Applications | Battery contacts, electrical switches, relays, connectors, circuit breakers, automotive wiring |
| Service | OEM & ODM Custom Manufacturing |
| MOQ | Negotiable – trial runs and mass production both welcome |
Application Scenarios
Battery holder contacts and terminal clips for consumer electronics and power tools
Switch and relay contact springs for industrial control panels
Connector pins and socket contacts for automotive wiring harnesses
Circuit breaker and fuse clip assemblies for electrical distribution
Brush holder springs for DC motors and generators
Grounding clips and EMI shielding springs for electronic enclosures
Why Choose SEME Hardware as Your Stamping Parts Supplier
12+ years of precision metal stamping and spring manufacturing experience, serving clients across automotive, electronics, and industrial sectors
Factory direct pricing – competitive costs with no middleman markup
Advanced stamping equipment – high-speed presses from 25T to 200T, supporting parts from miniature to medium size
Stringent quality control – dimensional inspection, hardness testing, conductivity verification, and salt spray corrosion testing
Fast prototyping – 5–7 days for sample development with design optimization support
Global export experience – trusted by buyers across North America, Europe, and Southeast Asia
Flexible order quantities – from engineering samples and small pilot runs to high-volume mass production
OEM Customization Service
Send us your 2D/3D drawings, material specifications, or existing sample parts. Our engineering team will review the design, recommend optimal material and plating options, provide formal quotations, and produce functional prototypes for your fit and performance testing.
We can customize:
Part geometry (shape, bending angle, curvature)
Material grade and thickness
Surface plating (tin, silver, gold, nickel, or selective plating)
Mechanical spring force and deflection characteristics
Packaging (tape & reel, tray, or bulk packaging)
Contact Us
Request free samples, engineering consultation, or an official quotation for custom precision stamped copper and brass flat spring contacts.
Tel / WhatsApp / WeChat: +86 186 6511 1545
Email: [email protected]
Website: www.semehardware.com
Address: Building 1, No. 48 Minghua Road, Shijie Town, Dongguan City, Guangdong Province, China
Send your inquiry and drawings today – our engineering team responds within 2 hours with design feedback & quotation.
FAQs
Q1: What copper alloys do you recommend for electrical contact springs?
A: Brass (C2680) for cost-effective general applications, Phosphor Bronze (C5191) for high fatigue resistance, and Beryllium Copper (C17200) for maximum spring performance and conductivity. We can recommend the optimal grade based on your application.
Q2: What surface plating options are available?
A: We offer tin plating (cost-effective anti-oxidation), silver plating (high conductivity), gold plating (ultra-low contact resistance for sensitive electronics), and nickel plating (wear resistance). Selective/partial plating is also supported.
Q3: What dimensional tolerances can you achieve?
A: Our standard stamping tolerance is ±0.05mm, with tighter tolerances available for critical dimensions depending on part geometry.
Q4: How long does prototyping take?
A: Sample development usually takes 5–7 working days for most designs. Tooling fabrication for complex geometries may take 10–15 days. Prototype costs are negotiable.
Q5: What is the typical lead time for mass production?
A: Standard production lead time is 15–25 working days after sample approval, depending on order quantity and plating requirements.
Q6: Can you support high-volume automated assembly packaging?
A: Yes, we offer tape & reel packaging compatible with SMT and automated assembly lines, as well as tray packaging and bulk packaging options.
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