6914.10.40.00 - Ceramic ferrules of porcelain or china, not exceeding 3 mm in diameter or 25 mm in length, having a fiber channel opening and/or ceramic mating sleeves of alumina or zirconia

This HTS category, 6914.10.40.00, specifically classifies ceramic ferrules and mating sleeves made of porcelain or china. The key defining characteristics for inclusion are their precise dimensions: a diameter not exceeding 3 millimeters and a length not exceeding 25 millimeters. Furthermore, these items must possess a fiber channel opening or be ceramic mating sleeves made of either alumina or zirconia, indicating a specialized function in optical or similar fiber optic applications.

This classification is distinct from its sibling category, 6914.10.80.00, which covers "Other" ceramic articles of porcelain or china. While 6914.10.40.00 is highly specific regarding the physical dimensions and functional attributes of porcelain or china ferrules and sleeves, the "Other" category is a residual classification for any other porcelain or china ceramic articles not elsewhere specified within Chapter 69. Therefore, items classified here are strictly limited to the defined ferrules and sleeves, unlike the broader scope of the sibling node.

As this is a leaf node within the HTS structure, there are no further subcategories to introduce. The classification is complete at this level, meaning that any porcelain or china ceramic ferrules or mating sleeves meeting the specified dimensional and material criteria will be classified under 6914.10.40.00. Importers should carefully verify that their merchandise precisely aligns with the diameter, length, and material requirements to ensure accurate customs declaration.