| 428 / | HD | STOCK MATERIAL OR MISCELLANEOUS ARTICLES |
| 221 | DF | WEB OR SHEET CONTAINING STRUCTURALLY DEFINED ELEMENT OR COMPONENT {9} |
| 332 | DF | .~ Physical dimension specified {5} |
| 334 | DF | .~.~ Coating layer not in excess of 5 mils thick or equivalent {1} |
| 335 | DF | .~.~.~ Up to 3 mils {1} |
| 336 | | .~.~.~.~ 1 mil or less |