Harmonized System
Section XV > Chapter 74 > Heading 7415
Nails, tacks, drawing pins, staples (other than those of heading 83.05) and similar articles, of copper or of iron or steel with heads of copper; screws, bolts, nuts, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of copper.
Section XV > Chapter 74 > Heading 7415 > 7415.2
Other articles, not threaded
Section XV > Chapter 74 > Heading 7415 > 7415.3
Other threaded articles
Section XV > Chapter 74 > Heading 7415 > 7415.10
Nails and tacks, drawing pins, staples and similar articles
Section XV > Chapter 74 > Heading 7415 > 7415.2 > 7415.21
Washers (including spring washers)
Section XV > Chapter 74 > Heading 7415 > 7415.3 > 7415.33
Screws; bolts and nuts
Section XV > Chapter 74 > Heading 7416
[deleted]
Section X > Chapter 48 > Heading 4812
Filter blocks, slabs and plates, of paper pulp.