4010.35.50.00 - Other

This HTS classification pertains to endless synchronous belts specifically designed for power transmission, with an outside circumference ranging from over 60 cm up to and including 150 cm. These belts are characterized by their synchronized movement, often achieved through molded teeth or cogs on the inner surface that engage with pulleys, ensuring precise and non-slip operation. The construction of these belts is primarily of vulcanized rubber.

Distinguishing this category from its siblings, the key criterion for inclusion here is the composition of any accompanying textile materials. This specific subheading covers transmission belts where the textile components are predominantly made of man-made fibers by weight, over any other single type of textile fiber. This differentiates it from belts where vegetable fibers might predominate, which fall under a separate subheading.

As this is a leaf node within the HTS structure, there are no further subcategories to explore. Therefore, classification into this subheading hinges entirely on meeting the physical dimensions (circumference), the primary material (vulcanized rubber), the function (endless synchronous transmission belt), and the specific predominance of man-made fibers within any integrated textile components. Examples would include automotive timing belts or industrial synchronous belts used in machinery where precise synchronization is critical and man-made reinforcing materials like polyester or aramid are incorporated.