Copper, nails, tacks, drawing pins, staples (not those of heading no. 8305) and the like, of copper or iron or steel with heads of copper; screws bolts, nuts, screws hooks, rivets, cotters, washers

Copper; nails and tacks, drawing pins, staples and similar articles of copper, or of iron or steel with copper heads

Copper; washers, (including spring washers), not threaded

Copper; rivets, cotters, cotter-pins and similar articles, not threaded

Copper; screws, bolts and nuts, threaded

Copper; articles n.e.c. in heading no. 7415