Nuote Metals dispatched a sample set of DIN 7340 A rivets to a Malaysian electronics connector manufacturer on October 24, 2026. The buyer requested the samples for in-house testing at their Penang facility before qualifying Nuote Metals as a production supplier.
Sample details:
| Item | Specification |
|---|---|
| Product | DIN 7340 A rivets – flat head, tubular |
| Material | C26800 brass with silver plating |
| Shank diameter | 2.0mm (±0.03mm) |
| Length under head | 3.5mm (±0.10mm) |
| Quantity | 150 pieces |
| Shipping | DHL express, 3–5 working days |
| Purpose | Fit test, plating adhesion check, and electrical resistance measurement |
The buyer’s application involves small electrical contact assemblies where silver plating provides stable conductivity and corrosion resistance. They requested this exact size after reviewing our DIN 7340 product data online.
DIN 7340 A rivets are cut from seamless drawn brass tubing, ensuring a clean internal bore and consistent wall thickness. The flat head (Form A) sits flush with the workpiece surface.
| Parameter | Specification | Tolerance / Method |
|---|---|---|
| Standard | DIN 7340 A | Form A – flat head |
| Material | C26800 brass (CuZn36) | EN 12166 |
| Shank diameter (d1) | 2.0mm | ±0.03mm |
| Length under head (l) | 3.5mm | ±0.10mm |
| Wall thickness (s) | 0.25mm | Standard |
| Head diameter (d2) | 3.2mm | ±0.10mm |
| Head height (k) | 0.30mm | ±0.05mm |
| Plating | Silver (Ag) | 3–5 microns |
| Salt spray resistance | ≥48 hours | ASTM B117 |
Why silver plating on brass:
Every sample pack includes the same documentation as a production order.
Documents enclosed:
Transparency: The plating report lists actual silver thickness readings, not a generic range. The Malaysian buyer can verify plating uniformity before their electrical testing.
DIN 7340 A rivets are produced from seamless brass tube, cut to length and formed with a flat head. The 2.0mm shank is held to ±0.03mm to ensure consistent fit in the buyer’s assembly fixture.
Brass parts are barrel-plated with silver to 3–5 microns. Plating thickness is verified by XRF on five points per sample. Adhesion is checked by tape peel per ASTM D3359.
Operators check shank diameter, length, and head height every 30 minutes. Any drift beyond tolerance triggers tool adjustment.
100% visual inspection for burrs, plating defects, and head cracks. Random samples undergo dimensional and plating thickness checks before packing.
Stock samples are free – buyer pays only express shipping (typically US$40–US$70 to Malaysia)
Single-size requests accepted – no requirement to order multiple sizes
Full documentation included – mill certificate, plating report, and dimensional data at no extra charge
No purchase commitment – sample evaluation does not require a PO
Q1: What is the MOQ for this 2.0×3.5mm DIN 7340 A rivet after sample approval?
A1: Standard MOQ is 20,000 pieces per size. For first-time Malaysian buyers, we accept trial orders from 5,000 pieces at a slightly higher unit price. This 2.0×3.5mm specification is a small precision part, so we recommend ordering at least 10,000 pieces to absorb setup and plating costs efficiently. Production lead time after sample approval is 15–20 working days. We do not require the buyer to order multiple sizes – this single specification can be ordered on its own.
Q2: How do you verify silver plating thickness and adhesion before shipment?
A2: We verify plating at three stages. First, the plating bath is checked daily for silver concentration and temperature. Second, after plating, we measure thickness by XRF on five points per sample – the report is included in the sample pack. Third, adhesion is tested by tape peel per ASTM D3359. For production orders, we retain a plated sample from each lot for traceability. If third-party testing finds plating below 3 microns or poor adhesion, we re-plate or replace the batch at our cost.
Q3: Is DIN 7340 A different from a standard hollow rivet, and why choose it for electrical contacts?
A3: DIN 7340 A is a German standard for tubular rivets cut from seamless drawn tubing, with a flat head (Form A). Unlike deep-drawn hollow rivets, DIN 7340 rivets have a clean internal bore and consistent wall thickness, which matters for small electrical contacts where the rivet may carry current or accept a mating pin. The flat head provides a low-profile finish. For the Malaysian buyer’s 2.0×3.5mm application, the seamless tube construction and silver plating combine stable conductivity with corrosion resistance in humid conditions.
Q4: Can you support testing at the client’s Malaysian facility and provide test data before production?
A4: Yes. The sample pack includes dimensional data, plating thickness, and salt spray results so the client can compare against their internal specification. If the client’s testing identifies a required adjustment – for example, a different plating thickness or a slightly different length – we can produce a revised sample batch of 50–100 pieces within 10–15 working days. We do not charge for the first revision sample if the change is within DIN 7340 tolerance. Production begins only after the client confirms the sample passes their in-house testing.