5403.33.00.40 - Multifilament, with twist of 5 turns or more per ` meter (606)

This HTS category, 5403.33.00.40, specifically classifies artificial filament yarn, not intended for retail sale and not sewing thread, that is made from cellulose acetate. The key defining characteristic for inclusion in this subcategory is that the yarn must be multifilament, meaning it comprises multiple filaments twisted together, and importantly, this twist must be 5 turns or more per meter. This category falls under the broader scope of "Other yarn, single" within artificial filament yarn.

It is crucial to distinguish this category from its sibling, 5403.33.00.20. While both concern other yarn, single, of cellulose acetate, this node requires a specific minimum twist level (5 turns per meter or more) for its multifilament construction. The sibling category encompasses monofilament or multifilament yarn that is either untwisted or has a twist of less than 5 turns per meter. Therefore, the degree of twist is the primary differentiator for correct classification.

As this is a leaf node within the HTS structure, there are no further subcategories. Classification at this level is complete based on the material (cellulose acetate), form (multifilament yarn), purpose (not for retail sale, not sewing thread), and specifically, the twist count (5 turns per meter or more). Examples of such yarn might include those used in industrial textiles, specialized weaving applications, or as components in technical fabrics where a higher twist is required for strength or specific textural properties.