Retaining ring Hs Code

Retaining ring harmonized system code

Product Overview Retaining rings classified under HS Code 732690 are precision-engineered metal fasteners designed to secure components onto shafts, housings, or bores, preventing axial movement in mechanical assemblies. Typically fabricated from high-strength carbon steel or stainless steel alloys, these rings exhibit excellent wear resistance, dimensional stability, and corrosion resistance, essential for maintaining assembly integrity under dynamic load conditions. The product range within HS 732690 encompasses various retaining ring types, including internal and external snap rings, spiral rings, and circlips, each tailored for specific mounting configurations and load requirements. These retaining rings undergo advanced heat treatment and surface finishing processes—such as phosphate coating or passivation—to enhance durability and performance. Commercially, retaining rings serve critical roles across food processing equipment, retail machinery, and industrial manufacturing lines, where reliable component retention is paramount. Their standardized dimensions and compliance with international mechanical standards position them as indispensable components in global supply chains, delivering cost-effective, precision fastening solutions that meet stringent operational and regulatory demands. HS Code Classification & Trade Specifications The HS Code 732690 falls under Chapter 73 (Articles of Iron or Steel), Heading 7326 (Other articles of iron or steel), with Subheading 732690 specifically assigned to “Other articles of iron or steel, not elsewhere specified.” This classification is based on the product’s material composition and functional attributes as metal fastening devices not covered by more specific codes. Retaining rings under this code are typically packaged in bulk quantities using corrugated fiberboard boxes or plastic bins, with desiccant inserts or corrosion inhibitors employed to preserve surface integrity during transit. Shipping protocols adhere to international standards for metal components, emphasizing moisture control and mechanical protection to prevent deformation or oxidation. Quality standards align with ISO 898-2 and DIN 471/472 specifications, ensuring consistent mechanical properties such as tensile strength (minimum 600 MPa) and dimensional tolerances within ±0.1 mm. Compliance with WTO and Customs Cooperation Council (CCC) guidelines is maintained to facilitate accurate tariff classification and smooth customs clearance, supporting efficient international trade operations and regulatory adherence.

Retaining ring Chapter Note

1.- In this Chapter the expression “cast iron” applies to products obtained by casting in which iron predominates by weight over each of the other elements and which do not comply with the chemical composition of steel as defined in Note 1 (d) to Chapter 72. 2.- In this Chapter the word “wire” means hot or cold-formed products of any cross-sectional shape, of which no cross-sectional dimension exceeds 16 mm.