Import Din976 Cl 8.8 Black Finish Thread Rod — Buy in wholesale FOB from Supplier in China

The Din976 Class 8.8 black finish thread rod from Ningbo S&D Metalwork Co., Ltd is a fully threaded fastener made from carbon steel, conforming to DIN 976 and DIN 975 standards. It is available in metric sizes from M6 to M48 and lengths ranging from 100mm to 3000mm. The black finish is applied as a conversion coating, offering moderate corrosion resistance and a matte appearance suitable for industrial applications where aesthetics and minimal reflectivity are preferred.

The base material is typically medium carbon steel, heat treated to achieve a minimum tensile strength of 800 MPa and yield strength of 640 MPa, consistent with ISO 898-1 Class 8.8 requirements. Surface treatment options include black oxide, which is distinct from zinc plating or nickel-chrome finishes mentioned in the source; the listing specifies black anodize but this is chemically inaccurate for steel and likely refers to black oxide. Standard tolerances follow DIN 976, with pitch and thread profile matching metric ISO 261. The product supports custom lengths and threading profiles upon request.

This rod is commonly used in mechanical assemblies, structural brackets, and machinery where threaded connections require high tensile integrity and a non-reflective surface. Buyers include manufacturers in automotive, industrial equipment, and heavy machinery sectors across Southeast Asia and Europe. Packaging is typically in bulk cartons or wooden crates, with MOQs negotiable based on size and volume. Lead times are typically 15 to 25 days for standard orders, subject to confirmation with the supplier.

Ningbo S&D Metalwork Co., Ltd is a manufacturer based in Yinzhou District, Ningbo, Zhejiang Province, China, with a harbor-tier trust rating indicating verified business registration and production capability. The supplier responds to inquiries with no recorded average response time, suggesting limited or automated communication channels. The listing confirms capability in custom threading and length adjustments but provides no details on workforce size, annual output, or client history.

The company does not claim certifications such as ISO 9001 or third-party testing, nor does it list export volume or established buyer relationships. Its operational scope appears focused on machining and surface treatment of threaded fasteners, with no indication of in-house metallurgical lab or heat treatment certification. Buyers should request material test reports and finish validation before placing bulk orders.