What This Collection Delivers for Your Charging System This is a complete line of metal-stamped terminals for EV charging connectors—from CCS2 and CHAdeMO to GB/T and NACS plugs. Each terminal is bl
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What This Collection Delivers for Your Charging System This is a complete line of metal-stamped terminals for EV charging connectors—from CCS2 and CHAdeMO to GB/T and NACS plugs. Each terminal is bl
This is a complete line of metal-stamped terminals for EV charging connectors—from CCS2 and CHAdeMO to GB/T and NACS plugs. Each terminal is blanked, formed, and plated in-house at BQUQ, giving you dimensional accuracy of ±0.01 mm and positional runout under 0.02 mm. Typical production lead time is 12 working days after drawing approval, and surface hardness reaches HRC 45–52 with selective work-hardening options. If your charging gun fails at 10,000 mating cycles, switch to this collection—it’s built to exceed 15,000.
We stamp terminals from three primary alloys: C11000 copper (conductivity ≥ 101% IACS), C17200 beryllium copper (hardness HRC 38–44 after aging), and 301 stainless steel (for spring-reinforced contacts). For high-current DC pins, we use copper with 0.8 mm thick silver plating (per ASTM B700) to keep contact resistance below 0.2 mΩ. The edge break radius is controlled to 0.05–0.10 mm, eliminating burrs that cause arcing. If you’re still unsure which alloy fits your charging voltage—350 V or 1000 V—send us your current spec, and we’ll recommend within one business day.
Terminal geometry—such as a 6.0 mm pin with a 0.4 mm wall thickness—creates natural spring back. Our tooling uses a three-stage progressive die: (1) blanking with 0.5° relief angle, (2) coining at 120 tons to stress-relieve the bend zone, (3) final calibration to hold the 90° ± 0.2° bend angle. We measure spring back on every first article using a CMM, not a gauge. This process keeps your insertion force within 9.5 N ± 0.5 N, which matters when your charger must engage with 0.5 mm radial misalignment.
Raw stamping leaves a Ra 0.8 µm finish. We then apply either bright acid tin (2–4 µm) or selective silver (2 µm on contact zone only) to reduce cost. For coastal installations, we offer nickel underplating (1.5 µm) followed by gold flash (0.2 µm) to pass 72-hour neutral salt spray per ASTM B117. These finishes are applied in our sister facility, so we control the entire chain—no third-party plating delays. You get a 48-hour salt spray test report with each lot, not a generic certificate.
Every batch of terminals is checked for critical dimensions using a Zeiss CMM (accuracy ±0.002 mm). For high-current pins, we run 100% eddy current testing on the plating thickness. Pull-force samples (per UL 2251) are pulled at 50 N for 6.0 mm pins, and we record the break point—if it fails, the lot is scrapped, not reworked. We also include a runout report showing that the terminal’s concentricity stays within 0.02 mm total indicator reading (TIR) across the mating end. This data is in your shipping package, and a PDF copy is emailed to you the day before dispatch.
Our standard lead time for this collection is 12 working days for quantities up to 50,000 pieces. We do not enforce a minimum order quantity—your prototype run of 200 parts is welcome. For repeat orders, we hold your tooling in a climate-controlled rack, and reorders ship in 8 days. If you need a rush, our 24-hour express service (additional 15% cost) is available for in-stock terminal sizes like 2.4 mm, 3.0 mm, and 6.0 mm round pins.
Standard stamped terminals might cost $0.03–$0.08 per piece, but they fail at 5,000 mating cycles. Our collection starts at $0.045 for 3.0 mm tin-plated pins and goes up to $0.18 for 6.0 mm silver-plated pins with gold flash. The difference is in the die maintenance—we regrind tools every 50,000 strokes, not every 100,000, which keeps burr height below 0.03 mm. That adds 30% to your unit cost but extends your connector’s warranty to 10 years. For a full price list, request our tariff sheet with your connector model.
| Parameter | Specification |
|---|---|
| Materials | C11000 copper, C17200 beryllium copper, 301 stainless steel |
| Pin diameters | 2.4 mm, 3.0 mm, 4.0 mm, 6.0 mm (custom up to 12 mm) |
| Hardness (HRC) | 45–52 (work-hardened), 38–44 (aged BeCu) |
| Dimensional tolerance | ±0.01 mm on critical features |
| Runout (TIR) | ≤ 0.02 mm at mating end |
| Surface finish (Ra) | 0.8 µm raw; 0.4 µm after plating |
| Plating options | Tin 2–4 µm, silver 2 µm, gold flash 0.2 µm |
| Contact resistance | ≤ 0.2 mΩ (silver-plated) |
| Lead time | 12 working days (standard), 8 days (repeat) |
| MOQ | No minimum (prototype 200 pcs accepted) |
Our factory is 20 years old, with 18 CNC machining centers and 12 high-speed stamping presses (from 25 to 200 tons). The tool room runs 24/7, so die repairs don’t wait for a second shift. This precision manufacturing base is why we can hold ±0.01 mm on a stamped part, not just on a machined one. You get the cost advantage of made in China, but with the traceability of a certified ISO 9001:2015 system—every terminal batch is serialized and stored for 5 years.
Before you finalize your connector design, review our CNC cutting tool selection guide to understand how tooling wear affects your terminal edges. And if you’re setting tolerances for the first time, our CNC machining tolerances guide explains which features you can loosen to save cost without risking performance.
No MOQ—we accept prototype runs of 200 pieces and scale up to 500,000 with the same tooling.
Yes, we change die inserts for length (from 10 mm to 60 mm) and adjust plating thickness within 24 hours of your approval.
We run a 100% automated optical inspection for burr and surface defects, plus a destructive pull test every 1,000 pieces for continuous data.
Repeat orders ship in 8 days, but for a 24-hour emergency, we keep 2.4 mm and 3.0 mm tin-plated pins in stock.
Get a firm quote within 12 hours. Email sc@bquq.com or WhatsApp +86 13713157787. Send your drawing in STEP, PDF, or even a photo—our engineers will confirm feasibility and pricing today.
| Parameter | Capability |
|---|---|
| Materials | SPCC, SGCC, SUS301/304/316, brass, copper, beryllium copper, phosphor bronze |
| Process | Progressive die stamping, fine blanking, deep drawing, bending, tapping |
| Tolerance | ±0.01mm standard, ±0.005mm on request |
| Surface | Zinc plating, nickel, tin, gold, powder coating, passivation, anodizing |
| Die Size | Up to 1200 x 800 mm, 16-250 ton presses |
| Thickness | 0.05 - 6.0 mm sheet metal, wire 0.1 - 8.0 mm |
| Prototype | 7-15 days tooling, no MOQ on samples |
| Inspection | Full report per batch, CMM and optical measurement |
