7213.91.30.15 - Of Cold Heading Quality (CHQ) steel of a kind described in statistical note 6 to this chapter

This HTS category, 7213.91.30.15, specifically classifies wire rod of iron or nonalloy steel that is of "Cold Heading Quality" (CHQ). These are hot-rolled products, supplied in irregularly wound coils, with a circular cross-section measuring less than 14 mm in diameter. The "Cold Heading Quality" designation signifies that the steel possesses specific metallurgical properties, such as controlled grain structure and low levels of residual elements, making it suitable for manufacturing fasteners and other components through cold forming processes like upsetting and extrusion without cracking.

This classification is distinguished from its siblings by its intended application. Unlike the tire cord-quality steel wire rod (7213.91.30.11), which is designed for reinforcement in tires, or welding quality wire rods (7213.91.30.20), intended for welding wire production, this category focuses solely on steel destined for cold heading operations. The "Other" category (7213.91.30.93) would encompass wire rod of circular cross-section meeting the diameter and hot-rolled coil criteria but not specifically designated as CHQ, tire cord-quality, or welding quality.

As this is a leaf node in the HTS, there are no further subcategories. Therefore, classification within 7213.91.30.15 hinges on confirming the material is iron or nonalloy steel, hot-rolled into coils with a circular cross-section under 14mm in diameter, and explicitly meets the technical specifications of Cold Heading Quality as further defined by statistical note 6 to Chapter 72. This ensures that specialized steel wire rods for fastener manufacturing are accurately identified and appropriately duty-assessed.