| ZANCHOL | 300410-90 |
| ZEES, ALUMINUM, FABRICATED | 761090 |
| ZEES, IRON OR STEEL, FABRICATED | 730890 |
| ZEIN PLASTICS | 391390 |
| ZENER DIODES | 854110 |
| ZEOLITES | 253090 |
| ZEPHARANTHUS BULBS, DORMANT | 060110 |
| ZINC ACETATE | 291529 |
| ZINC AMMONIUM CHLORIDE | 284290 |
| ZINC BARS, RODS, PROFILES AND WIRE | 790400 |
| ZINC BERYLLIUM SILICATE | 284290 |
| ZINC BROMIDE | 282759 |
| ZINC BUTYLXANTHATE | 293010 |
| ZINC CADMIUM SULFIDE | 284290 |
| ZINC CARBONATE | 283699 |
| ZINC CHLORIDE | 282736 |
| ZINC CHROMITE CATALST | 284190 |
| ZINC CYANIDE | 283719 |
| ZINC CYANIDE, MEDICINAL, PREPARATION, BULK | 300319-90 |
| ZINC DIBUTYLDITHIOCARBAMATE | 293020 |
| ZINC DUST, NOT FLUE DUST, NOT PREPARED AS COLORS, PAINTS, ETC. | 790310 |
| ZINC FLAKES, NOT PREPARED AS COLORS, PAINTS, ETC. | 790390 |
| ZINC HYDROSULFITE | 283220 |
| ZINC LAURATE | 293020 |
| ZINC MERCAPTOBENZOTHIAZOLE | 293420 |
| ZINC NITRATE | 283429 |
| ZINC ORES AND CONCENTRATES | 260800 |
| ZINC OXIDE | 281700 |
| ZINC OXIDE OINTMENT | 300410-90 |
| ZINC OXIDE, MEDICINAL, PREPARATIONS, BULK | 300319-90 |
| ZINC OXIDES | 281700 |
| ZINC PEROXIDE | 281700 |
| ZINC PHENOLSULFONATE PREPARATIONS, BULK | 300319-90 |
| ZINC PHENOLSULFONATE, DOSAGE | 300410-90 |
| ZINC PHOSPHATE | 283529 |
| ZINC PHOSPHIDE | 284800 |
| ZINC PLATES, SHEETS, STRIP AND FOIL | 790500 |
| ZINC POWDER, NOT PREPARED AS COLORS, PAINTS, ETC. | 790390 |
| ZINC SPELTER, HARD | 262011 |
| ZINC STEARATE | 291570 |
| ZINC STEARATE, MEDICINAL, DOSAGE | 300410-90 |
| ZINC STEARATE, MEDICINAL, PREPARATIONS, BULK | 300319-90 |
| ZINC SULFATE | 283326 |
| ZINC SULFIDE | 283020 |
| ZINC SULFOCARBOLATE PREPARATIONS, BULK | 300319-90 |
| ZINC THIOCYANATE | 283800 |
| ZINC TUBES, PIPES AND FITTINGS | 790600 |
| ZINC UNDECYLENATE PREPARATIONS, BULK | 300319-90 |
| ZINC UNDECYLENATE, DOSAGE | 300410-90 |
| ZINC VALERATE | 291560 |
| ZINC VALERATE PREPARATIONS, BULK | 300319-90 |
| ZINC WASTE AND SCRAP EXCEPT BATTERY AND CELL SCRAP | 790200 |
| ZINC, UNWROUGHT FORMS | 790111-20 |
| ZINC-70 | 284590 |
| ZINCITE ORE | 260800 |
| ZINEB, PREPARATIONS | 380820 |
| ZIPPER CORD, COTTON, NONELASTIC, BRAIDED | 580810 |
| ZIPPERED FRONT JACKETS, MEN'S AND BOYS' OF COTTON, NOT KNIT | 620192 |
| ZIPPERED PARTS | 960720 |
| ZIPPERS | 960711 |
| ZIRAM, PREPARATIONS | 380820 |
| ZIRCON AND ZIRCONIA BRICK AND SIMILAR SHAPES | 690290 |
| ZIRCON AND ZIRCONIA REFRACTORIES | 381600 |
| ZIRCON JEWELRY (EXCEPT SET IN PRECIOUS METAL) | 711620 |
| ZIRCON SAND | 261510 |
| ZIRCON, NATURAL, GEM QUALITY, CUT BUT UNSET | 710399 |
| ZIRCON, NATURAL, GEM QUALITY, ROUGH | 710310 |
| ZIRCON, NOT GEM QUALITY | 261510 |
| ZIRCONIC ANHYDRIDE | 282560 |
| ZIRCONIUM ARTICLES | 810990 |
| ZIRCONIUM CARBIDE | 284990 |
| ZIRCONIUM CARBONATE | 283699 |
| ZIRCONIUM CHLORIDE | 282739 |
| ZIRCONIUM HYDROXIDE | 282590 |
| ZIRCONIUM IODIDE | 282760 |
| ZIRCONIUM NITRATE | 283429 |
| ZIRCONIUM ORES AND CONCENTRATES | 261510 |
| ZIRCONIUM OXIDE | 282560 |
| ZIRCONIUM OXYFLUORIDE | 282690 |
| ZIRCONIUM PHOSPHATE | 283529 |
| ZIRCONIUM SULFATE | 283329 |
| ZIRCONIUM TETRACHLORIDE | 282739 |
| ZIRCONIUM TETRAFLUORIDE | 282619 |
| ZIRCONIUM WASTE AND SCRAP | 810910 |
| ZIRCONIUM, UNWROUGHT | 810910 |
| ZIRCONIUM, WROUGHT FORMS | 810990 |
| ZIRCONIUM-95 | 284440 |
| ZITHERS | 920290 |
| ZOISITE, NATURAL, GEM QUALITY, CUT BUT UNSET | 710399 |
| ZOISITE, NATURAL, GEM QUALITY, ROUGH | 710310 |
| ZOOLOGICAL COLLECTIONS AND COLECTORS' PIECES | 970500 |
| ZORIS | 640220 |
| ZOYSIA GRASS SEED FOR SOWING | 120929 |
