Medical and hypodermic needles are classified in the chapter covering medical instruments and apparatus, not here. Heading 7319 covers needles used for hand sewing, knitting, and similar craft or textile purposes. The intended use and design — a hollow bore for medical needles versus a solid shaft with an eye for sewing needles — are the distinguishing features.

The heading covers iron or steel pins, but articles with heads of copper are explicitly excluded from the related heading 7317. For 7319, the key is whether the article is a pin of iron or steel as described. Pins where the head material changes the essential character or where the article is more specifically described by another heading (such as jewelry or costume accessories) may be classified elsewhere.