OpeningYour drawing defines the spring. We build it exactly to that drawing, then verify every critical dimension before shipment. No guesswork. No surprises.This collection covers copper helical ante
Your drawing defines the spring. We build it exactly to that drawing, then verify every critical dimension before shipment. No guesswork. No surprises.
This collection covers copper helical antenna springs—single-start, multi-start, conical, or straight. You send the CAD or PDF. We handle material selection, coiling, heat treatment, and surface finish.
| Parameter | Value |
|---|---|
| Wire diameter | 0.05–8.0 mm |
| Spring OD | 0.5–80 mm |
| Free length | 0.5–200 mm |
| Coil count | 2–100, custom pitch |
| Materials | C11000, C17200, C5191, C5210, or customer-specified |
| Coiling process | CNC coiling machine (0.01 mm repeatability) |
| Heat treatment | Stress relief at 180–320°C, per material grade |
| Surface finish | Bare, silver-plated, gold-plated, or tin-plated (2–5 µm) |
| Tolerance (wire dia.) | ±0.02 mm |
| Tolerance (free length) | ±0.05 mm |
| Tolerance (OD) | ±0.05 mm |
| Inspection | 100% OD and free length check; 2D optical comparator for coil pitch |
| Batch size | 1–500,000 pieces |
| Packaging | Anti-static bags, ESD trays, or custom labeling |
All springs are made in China at our Dongguan factory. We run 12 CNC coiling machines, 4 heat treatment ovens, and 2 automated inspection stations. Production capacity is 50,000 pieces per day for standard copper alloys.
1. Batch-traceable quality. Every lot gets a unique batch number. That number links to material certificates, machine settings, heat treatment records, and inspection results. If a problem appears in your assembly line, we trace it back to the exact coil and operator in minutes.
2. Inspection report per batch. We don’t just say “it’s good.” You receive a printed and digital report showing measured values for wire diameter, free length, OD, coil count, and load at specified deflection. For RF applications, we also measure contact resistance on a 4-wire Kelvin fixture.
3. One factory for CNC + stamping + springs + heat sinks. Your antenna spring might sit next to a stamped contact or a CNC-machined housing. We make all of them under one roof. That means one purchase order, one quality system, one shipping date. You save logistics cost and avoid tolerance mismatch between suppliers.
Copper helical antenna springs are not decorative. They carry RF signals and mechanical load simultaneously. Typical applications include:
In each case, the spring must provide consistent contact force over thousands of cycles. Copper alloys give low resistivity (1.7–6.0 µΩ·cm) and good fatigue life. We adjust the spring rate by changing wire diameter, coil count, and free length—all per your drawing.
Looking for a different part? We also machine Custom Battery Holder Contact Springs | Precision Manufacturing, No MOQ in the same Dongguan factory.
Q: Do you really have no MOQ? A: Yes. We run prototype orders of 1–10 pieces at the same tolerance as production. The only difference is unit price. Tooling is CNC-based, so there is no dedicated die cost.
Q: How do you control tolerance and quality? A: We use CNC coiling machines with servo-driven wire feed. After coiling, each spring passes through an optical measuring system that checks OD, free length, and pitch. For critical dimensions, we use a CMM with 0.001 mm resolution. Inspection report is included with every shipment.
Q: What is your lead time for custom copper springs? A: Prototypes: 7–12 days from drawing approval. Production: 15–20 days, depending on quantity and surface finish. For urgent needs, we offer 48-hour express prototyping on standard copper alloys.
Q: Can you provide material certificates? A: Yes. We supply mill test certificates for copper alloy batches, including chemical composition and mechanical properties. For aerospace or medical orders, we also provide traceability to the original ingot.
Send us your PDF, STEP, or DXF. We will review the spring design, confirm material and tolerance, and send a firm quote within 12 hours. No hidden fees. No vague promises.
Email: sc@bquq.com WhatsApp: +86 13713157787
We are a precision manufacturing factory in Dongguan, China, with 20 years of spring-making experience. Your drawing is safe with us—we treat it as confidential and never share it with third parties.
Get your quote today.
| Parameter | Capability |
|---|---|
| Materials | SUS302/304/316, SWC piano wire, SWP music wire, 65Mn, phosphor bronze, beryllium copper |
| Types | Compression, extension, torsion, wire forms, battery springs, touch springs |
| Wire Diameter | 0.05 - 12.0 mm |
| Tolerance | ±0.02mm standard, ±0.01mm on request |
| Surface | Zinc plating, nickel, black oxide, passivation, shot peening |
| Machines | CNC spring coiling machines, torsion machines, wire forming machines |
| Prototype | 72 hours, no MOQ on samples |
| Inspection | Load test per batch, fatigue test data on request |
