This Dual Coil Contact Spring, also known as dual disc battery conductive spring, is a specially shaped wire forming spring designed for electronic power conduction. It features dual spiral coil contacts connected with integrated Z-type bent bracket, finished in one single CNC forming process. Fabricated from 304 stainless steel wire, the spring undergoes electrolytic polishing to achieve smooth surface, reduce contact resistance and enhance stable electrical conductivity. As a professional precision spring manufacturer, we provide full custom service & OEM production. We can redesign and manufacture custom wire forming springs of different wire diameters, dimensions, elastic force and surface treatment according to customer technical drawings or physical samples to match diverse electronic assembly requirements.

Product Name:

Dual Coil Contact Spring / Battery Conductive Contact Spring

Raw Material:

304 Stainless Steel Wire

Wire Diameter:

0.6 mm

Standard Dimension:

Length 22mm, Width 20mm, Height 12mm

Forming Technology:

CNC Automatic Wire Forming, One-time Integrated Molding

Post Process:

Vibratory Deburring, Electrolytic Polishing

Machining Tolerance:

±0.03mm for critical assembly dimensions

Elastic Performance:

Customizable spring compression force upon request

Surface Treatment:

Electrolytic Polishing; Optional passivation

Custom Options:

Wire gauge adjustment, shape modification, force tuning, custom sizes

• Battery power contact conduction for small consumer electronics
• Portable smart devices, wireless accessories conductive terminals
• Household electronic components and power connection modules
• Sensor equipment, miniature circuit contact assemblies
• Custom elastic conductive terminals for electronic assembly kits

We deliver comprehensive custom service and OEM solutions for all wire forming springs:

1. Develop custom stainless steel springs according to customer samples or 2D/3D drawings.
2. Adjust wire diameter, overall size, bending angle and coil structure.
3. Customize elastic compression force to meet specific contact requirements.
4. Offer various surface finishing including electrolytic polishing, passivation.
5. Strictly control dimensional tolerance for precision electronic assembly.
6. Supply prototype samples for performance testing before mass production.

• One-step CNC integrated forming eliminates assembly gaps, solves unstable conduction caused by spliced components
• Dual spiral coil contact design increases contact area, avoids poor power connection during vibration
• Electrolytic polished surface lowers resistance, effectively prevent oxidation and weak electric contact issue
• 304 stainless steel material provides good corrosion resistance, extend service life for electronic products
• Precise consistent dimensional tolerance ensures interchangeability in mass automated assembly
• Flexible OEM custom service supports small-batch prototype and large-volume mass orders

• Raw material incoming inspection to verify 304 stainless steel material property.
• Real-time dimension monitoring during CNC wire forming production.
• Vibratory deburring inspection to remove sharp wire end burrs.
• Appearance check after electrolytic polishing for surface uniformity.
• Full inspection of dimension tolerance, spring elastic force and electrical conduction performance.
• Random sampling test before shipment; support third-party inspection on demand.

Q1: Can I customize the size, wire diameter and elastic force of this dual coil contact spring?

A1: Yes, we provide custom service & OEM, adjust all parameters based on your drawings or samples.

Q2: What tolerance can you achieve for custom wire forming springs?

A2: Critical dimensions can reach ±0.03mm, tolerance standards can be adjusted as your assembly needs.

Q3: Are pre-production samples available for testing?

A3: Prototype samples can be manufactured for your evaluation; sample lead time depends on customization.

Q4: Why choose electrolytic polishing for electronic conductive springs?

A4: It delivers smooth surface, reduces contact resistance and improves anti-oxidation performance.

Q5: Can other stainless steel grades be used for production?

A5: We support SUS301, SUS316 and other spring steel materials according to application requirements.