3LOCKY3 0.042D ultra-fine Enameled Copper Wire is high-precision Class155 natural self-bonding polyurethane winding wire, manufactured per exclusive 3LOCKY3 industry precision specification. Adopting double-layer composite coating: inner insulating PU layer + outer thermal self-bonding adhesive layer, finished with uniform glossy natural anti-oxidation enamel surface. Developed specially for micro mini electronic coils, it owns ultra-precise 0.042mm wire tolerance, no diameter deviation. Support heating self-shaping without auxiliary glue, adopt polyurethane paint-free direct welding process, greatly reduce defective rate of ultra-fine coil winding processing for precision manufacturers.

• Standard 3LOCKY3 Precision Spec: Exclusive standard model 3LOCKY3, ultra-strict tolerance 0.042mm ultra-fine wire diameter, uniform natural self-bonding enamel, fully matched global micro automatic winding equipment.
• Class155 Stable Heat Resistance: Standard 155℃ polyurethane temperature grade, anti-aging, stable insulation performance for long-term micro-load continuous operation of precision audio and sensor parts.
• Ultra-fine Uniform Natural Coating: Glossy compact natural insulating layer, anti-oxidation, anti-breakage, anti-fracture, good flexibility, not easy to break during ultra-fine high-speed winding.
• Reliable Thermal Self-bonding Performance: Even outer adhesive layer, stable curing bonding strength, firm coil forming, no loose wire, no displacement for tiny finished coils.
• Paint-free Direct Soldering: PU material realizes fast soldering without manual paint stripping, suitable for ultra-fine coil post-processing, save labor and processing cost.
• High-purity Conductive Stability: High-purity oxygen-free ultra-fine copper core, low stable resistivity, no signal distortion, stable acoustic signal output for micro earphone coils.
• Full Global Export Certifications: Passed UL, RoHS, ISO, IATF full qualification, zero customs clearance risk for Europe, America, Southeast Asia precision electronic procurement orders.

We are a professional enameled wire manufacturer with 20+ years industry experience, specializing in conventional & ultra-fine self-bonding enameled wire customized production.

• Free professional micro wire sample testing available
• Flexible MOQ, support small trial order and bulk mass production
• Support custom wire tolerance, bonding strength, insulation color customization
• Strict ultra-fine wire full-process inspection, zero batch diameter deviation
• Unified lead time: 15 working days
• Complete export certification & professional micro-coil technical after-sales support

Specially applied for in-ear Bluetooth headset micro voice coils, precision induction sensor coils, mini wearable electronic coils, tiny medical electronic winding components, high-precision miniature acoustic coil products.