Import Countersunk Head Socket Cap Screw — Buy in Bulk from Supplier in China

The product is a countersunk head socket cap screw conforming to the standards AMSE B18.3, DIN 7991, ISO 10642 and GB 70.3. It is offered in sizes from #0‑1‑1/2 up to M20, covering a length range typical for M‑type fasteners. Available material selections include carbon steel, alloy steel, stainless steel and brass, each supplied in grades A2‑307 (class 4.8 to 12.9). Thread forms are M, UNC and UNF, and finishes range from plain to zinc‑plated (clear, blue, yellow or black), black oxide, nickel, chrome or HDG.

Carbon‑steel variants in class 8.8 typically deliver a tensile strength of about 800 MPa, while stainless‑steel options provide corrosion resistance suitable for outdoor installations. The zinc plating on these screws usually has a coating thickness of 5 - 15 µm, which is standard for automotive fasteners. The screws are supplied in bulk cartons with a maximum weight of 25 kg per carton, a common packaging practice for high‑volume shipments. Typical tolerance for M‑thread pitch is ±0.13 mm, ensuring interchangeability with standard tools.

These fasteners are widely used in structural steel frames, metal buildings, oil‑and‑gas rigs, wind‑energy towers and automotive assemblies. Importers such as construction contractors and equipment manufacturers often request a minimum order of 500 kg per specification, as stated by the supplier. Trade terms are negotiable (FOB, CIF, CFR, CNF, EXW, DDU, DDP) and payment can be made by T/T or L/C, allowing flexibility for international sourcing.

Handan Daoning Fasteners Co., Ltd. is located in Handan, Hebei Province, China (postal code 056000). The supplier is listed with a harbor trust tier and a response rate shown as 0.00, indicating that enquiries are handled through the platform’s messaging system. Their production capability is reported at 1 000 tons per month, allowing them to fulfil large‑scale orders for fastener components.

The company’s catalogue focuses on countersunk head socket cap screws that meet multiple international standards and are supplied in a variety of materials and finishes. Their market coverage includes South and North America, Europe, Southeast Asia and Australia, reflecting a broad export orientation. No additional certifications or client references are provided in the source data, so buyers should request any required test reports directly from the supplier.