Import Bolt Joint — Buy in wholesale FOB from Supplier in China

This C20 carbon steel bolt joint from Shaanxi Cfsm Sales & Engineering Co., Ltd. is produced in Xi'an, China, using investment casting with subsequent precision machining to achieve the dimensional accuracy required for threaded mechanical fasteners. The material specification is C20 carbon steel, a grade with carbon content around 0.17-0.24%, offering a balance of tensile strength and machinability for load-bearing applications. The surface finish is white zinc plating, applied to resist corrosion in industrial environments where bare steel would degrade. This is a standard threaded fastener designed for machinery, construction equipment, and general assembly operations where bolted joints must maintain clamping force under vibration and static loads.

C20 steel is a common choice for general-purpose bolts and fasteners in Chinese manufacturing, with typical tensile strength in the range of 400-500 MPa and yield strength of approximately 245 MPa in normalized condition. The investment casting process used here allows for near-net-shape production of the bolt head and shank, reducing material waste compared to forging, though with slightly lower grain flow integrity. Precision machining of the threads follows casting, ensuring that pitch diameter and thread class meet standard tolerances for proper mating with nuts and tapped holes. White zinc plating, typically 5-8 micrometres thick, provides sacrificial corrosion protection rather than barrier protection, meaning the coating corrodes preferentially to protect the steel substrate.

Buyers for this bolt joint typically include original equipment manufacturers in agricultural machinery, construction equipment, and industrial automation, as well as maintenance, repair, and operations (MRO) distributors. The product suits applications where the fastener is not exposed to extreme temperatures or highly corrosive chemicals that would degrade zinc. For international procurement, buyers should confirm thread standards (metric ISO or imperial UNC/UNF), strength class markings, and whether the supplier provides mill test certificates or third-party inspection reports. Packaging is typically bulk in crates or cartons, though the exact configuration should be confirmed directly with Shaanxi Cfsm Sales & Engineering Co., Ltd.

Shaanxi Cfsm Sales & Engineering Co., Ltd. is located at No.90 Electronic 2nd Road, Yanta District, Xi'an, 710043, in Shaanxi Province, China. The company operates from a harbor trust tier, which provides basic marketplace verification. The supplier's profile shows a response rate of 0.00% and an average response time of zero hours, indicating that prospective buyers should not rely on rapid communication and may need to follow up proactively through available channels. No information about factory size, year of establishment, annual revenue, or employee count is provided in the source data, and none should be assumed.

The listing presents the company as a sales and engineering firm offering carbon steel hardware components, specifically this C20 bolt joint with investment casting and machining capabilities. The supplier claims precision manufacturing processes and standard industrial plating, though buyers should independently verify quality management certifications such as ISO 9001 if required for their procurement standards. The address in Yanta District places the company in Xi'an's technology and industrial corridor, a region with established metalworking and engineering supply chains. Any claims about MOQ flexibility, specific certifications, or shipping terms mentioned in marketing materials should be confirmed directly with the supplier before order commitment.