HS Code for Polyester sewing thread

Polyester sewing thread is classified under HS code 550810 because it consists of synthetic staple fibers that have been processed into a thread specifically intended for sewing. According to the General Rules of Interpretation (GRI) and the Chapter 55 notes, sewing thread is defined as multiple or cabled yarn that is put up on supports (such as reels or tubes) for use as sewing thread, or has been dressed for use as sewing thread. Since polyester is a synthetic polymer, and staple fibers are discontinuous fibers that have been spun, this product fits precisely into the 5508 heading. The classification remains consistent regardless of whether the thread is packaged for industrial use or retail sale, provided it meets the technical criteria for sewing thread rather than general-purpose yarn.

Products Included

• Spun polyester sewing thread
• Polyester-cotton core-spun sewing thread (where polyester predominates by weight)
• High-tenacity polyester sewing thread made from staple fibers
• Glazed or lubricated polyester thread for industrial sewing machines
• Retail-ready polyester thread spools

Common Misclassification

A frequent error involves confusing 550810 with HS code 540110. While both cover synthetic sewing thread, 540110 is reserved for thread made from synthetic filaments (continuous strands), whereas 550810 is for staple fibers (discontinuous strands). Additionally, importers may mistakenly use 5509, which covers general-purpose synthetic staple yarn; however, if the yarn is specifically prepared or put up for use as sewing thread, 5508 takes precedence.

FAQ

What is the HS code for polyester sewing thread?

The primary HS code for sewing thread made of synthetic staple fibers, such as polyester, is 550810.

Does the weight of the spool affect the classification?

No, HS code 550810 covers polyester sewing thread whether or not it is put up for retail sale, meaning both large industrial cones and small domestic spools are classified here.