This is a ready-to-run collection of stamped brass electrical terminals and contacts produced by BQUQ, a 20-year precision manufacturing factory in Dongguan, China. Every part ships at ±0.01 mm toler
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This is a ready-to-run collection of stamped brass electrical terminals and contacts produced by BQUQ, a 20-year precision manufacturing factory in Dongguan, China. Every part ships at ±0.01 mm toler
This is a ready-to-run collection of stamped brass electrical terminals and contacts produced by BQUQ, a 20-year precision manufacturing factory in Dongguan, China. Every part ships at ±0.01 mm tolerance, with surface finish Ra 0.8, and typical lead time of 7–10 days for custom tooling — no MOQ required.
Brass (C26000, C26800, C27200) gives you 28% IACS conductivity — that is 28 million siemens per meter. That beats stainless steel by 40x and is only 15% below pure copper. But the real reason engineers pick stamped brass terminals is spring force. Our grain structure is controlled during stamping so the contact arm holds 80% of its initial force after 10,000 cycles. We test this on every die lot. If you need higher conductivity, we offer a selective silver or tin plating option that adds 0.2 µm to 0.5 µm thickness without changing the base dimension.
A stamped terminal fails when burr height exceeds 0.05 mm or when the flatness warps after bending. Our progressive dies run at 300–600 strokes per minute, but we slow down to 150 SPM for critical bend zones. We use a two-step coining process on the contact tip — first a rough form, then a finish coin at 80% of material thickness. This gives you a burr height under 0.03 mm and a flatness within 0.05 mm over a 20 mm length. The die steel is D2 hardened to HRC 60, so you get consistent parts up to 500,000 hits before a minor polish.
We keep 12 tons of brass strip in-house — C26000 half-hard, C26800 spring hard, and C27200 for deep draw. The hardness range you can expect is HRB 60 to HRB 90 (or HRC 20–25 if you convert). For spring contacts, we use beryllium copper (C17200) at HRC 38–42, but the standard brass line is what ships fastest. Strip thickness ranges from 0.08 mm to 3.0 mm, width up to 250 mm. We also stock phosphor bronze (C51000) for high-fatigue applications. If your drawing calls for a specific temper, we order it — but standard stock means your first sample ships in 72 hours.
Every batch — even a 100-piece sample — goes through a 2.5D optical projector and a digital micrometer. We measure 5 critical dimensions per part: contact gap, terminal width, bend angle, hole position, and surface finish. For batches over 10,000 pieces, we use a fully automated vision system that checks 100% of parts at 2,000 pieces per hour. Cpk is maintained above 1.67 on all critical features. We send you a full inspection report with each shipment, including a material certificate from the mill. If we find any deviation over ±0.015 mm, the entire lot is quarantined and re-run at our cost.
Bare brass oxidizes fast — you will see tarnish in 48 hours. That is why we offer three standard surface finishes: matte tin plating (2–4 µm), bright tin plating (3–5 µm), and selective silver plating (2–3 µm) on the contact area only. The selective plating saves you 30% cost versus full silver. We also do nickel underplating (1–2 µm) to stop copper migration. Surface roughness after plating is Ra 0.8 on the contact face and Ra 1.6 on the body. If your terminal must survive salt spray, we run a 48-hour test per ASTM B117 — standard pass is no white corrosion on the contact tip.
Most stamping shops quote 4–6 weeks because they wait for material and die steel. We do not. Our tool room keeps 20 pre-hardened die bases and 40 standard punch holders ready. For a new terminal shape, we cut the die insert in 3 days using wire EDM, then assemble and trial-run on day 4. First articles go out on day 5–7. For existing dies in our library — we have over 1,500 active terminal dies — we ship within 48 hours. The "no MOQ" is not a marketing trick. We accept 50-piece prototypes at the same per-piece rate as a 50,000-piece order because our die setup is automated and changeover takes 15 minutes.
Stamped brass terminals arriving at your assembly line with green corrosion is a nightmare. We pack each reel or tray with VCI (vapor corrosion inhibitor) paper, then seal in a vacuum bag with silica gel. For tape-and-reel packaging, we use anti-static carrier tape with a sealed cover — no exposed brass to air. Each reel holds 1,500 to 5,000 parts depending on size, and we print a barcode label with batch number, date, and material heat code. If you need kitting (mixed terminal types in one reel), we do that at no extra charge for orders above 5,000 pieces. Our export cartons are double-wall, tested to 1.2-meter drop.
| Parameter | Specification |
|---|---|
| Material Grades | C26000, C26800, C27200, C17200 (BeCu), C51000 (Phos Bronze) |
| Strip Thickness | 0.08 mm – 3.0 mm |
| Terminal Width | 1.0 mm – 50 mm |
| Hardness (Brass) | HRB 60 – HRB 90 (HRC 20–25 equivalent) |
| Hardness (BeCu after heat treat) | HRC 38 – 42 |
| Dimensional Tolerance | ±0.01 mm on critical, ±0.03 mm general |
| Burr Height | ≤ 0.03 mm |
| Surface Finish (contact face) | Ra 0.8 µm |
| Flatness (over 20 mm length) | ≤ 0.05 mm |
| Lead Time (new die) | 7 – 10 days to first article |
| Lead Time (existing die) | 48 hours |
| MOQ | No minimum (50 pcs accepted) |
There is no MOQ — we accept 50-piece prototype orders at the same unit price as a 50,000-piece production run.
Yes, we build new dies from your drawing in 7–10 days and adjust plating thickness from 0.2 µm to 5 µm, including selective plating on just the contact tip.
We use a 2.5D optical projector, a digital micrometer, and a 100% automated vision system for batches over 10,000 pieces, with Cpk above 1.67 on all critical dimensions.
First articles ship in 7 days after drawing approval; production quantities of 100,000 pieces ship in 14 days total, and we offer 48-hour rush on any existing die in our library.
Send your drawing in STEP, IGES, or PDF format. We will return a firm price, a die cost (if new), and a confirmed ship date within 12 business hours. For standard brass terminals, we often quote the same day. Email your file to sc@bquq.com or message us on WhatsApp at +86 13713157787. If you are comparing stamping versus machining, read our CNC cutting tool selection guide and CNC machining tolerances guide to see which process fits your volume. This Stamped Brass Electrical Terminals Contacts Collection is made in China with precision manufacturing that matches any domestic US or EU shop — but at 40% lower cost. No MOQ, no tooling fee for standard shapes, and a quality report on every box.
| 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 |
