Import Ecu Galvanized M4-M24 Carbon Steel Material — Buy in Bulk from Supplier in Viet Nam

Ecu Galvanized M4 to M24 fasteners are made from carbon steel with an electro-galvanized coating, designed for corrosion resistance in dry to mildly humid environments. The product range includes metric thread sizes from M4 to M24, with standard pitch values per ISO 261. Each piece is produced to dimensional tolerances consistent with ISO 262 for hex head bolts and nuts. The electro-galvanized finish typically measures between 5 to 12 micrometers in thickness, providing a smooth, uniform surface without the zinc spangle common in hot-dip alternatives.

The base material is low to medium carbon steel, commonly conforming to ASTM A307 Grade A or equivalent EN 10087 standards. Electro-galvanization offers thinner, more precise coating control compared to hot-dip, making it suitable for applications requiring tighter dimensional tolerances and cleaner aesthetics. This finish is not intended for marine or high-humidity exposure; for those conditions, hot-dip galvanizing or stainless steel alternatives are recommended. The material is non-alloyed and lacks mechanical heat treatment, so tensile strength is limited to approximately 400-500 MPa.

These fasteners are commonly used in light industrial assembly, electrical enclosures, furniture framing, and non-structural automotive trim. Buyers include machinery assemblers, electrical component manufacturers, and distributors serving the HVAC and construction sectors. Packaging is supplied in 25kg cartons or bulk bags per customer request. Standard lead times are 15 to 25 days after order confirmation, with FOB Haiphong or Hanoi port available upon request. MOQ is typically 1 metric ton per size, but mixed-size orders are accepted.

Khang Dat Construction And Investment JSC is a Hanoi-based supplier specializing in carbon steel fasteners and structural hardware. The company operates from a warehouse and distribution center in Nam Tu Liem District, handling bulk orders for export and domestic industrial clients. Their listing shows a harbor-tier trust score, indicating verified business registration and active export documentation. There is no public information about production capacity, workforce size, or years in operation.

The supplier does not claim ISO certification, proprietary manufacturing, or in-house plating facilities. All product data reflects sourcing and repackaging activities rather than fabrication. Response metrics show no recorded communication history, suggesting orders are handled through automated systems or third-party agents. Buyers should confirm all technical details directly before placing bulk orders, as no technical support documentation is published.