7315.89 - Other:

This HTS category, 7315.89, encompasses "Other" chain and parts thereof, of iron or steel, that do not fit into the more specific subheadings within the 7315.8 category. It serves as a residual classification for chains made from iron or steel where the links are not of the stud link type (7315.81) and are not otherwise classified as welded link chain (7315.82). This generally includes chains with links of various shapes or construction methods not specifically defined elsewhere in the chapter.

To distinguish this category from its siblings, it's crucial to note the exclusions. 7315.81.00.00 specifically covers stud link chain, characterized by the presence of studs across each link for added strength and stability. Similarly, 7315.82 pertains to welded link chains. Therefore, 7315.89 is for any other type of iron or steel chain, such as those formed by casting, forging (other than stud link), or other non-welded assembly methods, or welded chains with distinct link characteristics not covered by 7315.82.

Within 7315.89, further distinctions are made based on the cross-sectional shape of the links. The subheading "With links of essentially round cross sections" groups chains where the material forming the link has a predominantly circular profile. The residual subheading, 7315.89.50.00 ("Other"), captures all remaining chains within this "Other" category that do not have links of essentially round cross sections. This allows for granular classification based on fundamental physical characteristics of the chain's components.