| ACOUSTICAL TILE, INSULATING MATERIALS, AND SUPPLIES | 010 | 00 |
| ADDRESSING, COPYING, MIMEOGRAPH, AND SPIRIT DUPLICATING MACHINE SUPPLIES: CHEMICALS, INKS, PAPER, ETC. | 015 | 00 |
| AGRICULTURAL CROPS AND GRAINS INCLUDING FRUITS, MELONS, NUTS, AND VEGETABLES | 019 | 00 |
| AGRICULTURAL EQUIPMENT, IMPLEMENTS, AND ACCESSORIES (SEE CLASS 022 FOR PARTS) | 020 | 00 |
| AGRICULTURAL EQUIPMENT, IMPLEMENTS, AND ACCESSORIES (SEE CLASS 022 FOR PARTS) | 021 | 00 |
| AGRICULTURAL EQUIPMENT AND IMPLEMENT PARTS | 022 | 00 |
| AIR COMPRESSORS AND ACCESSORIES | 025 | 00 |
| AIR CONDITIONING, HEATING, AND VENTILATING EQUIPMENT, PARTS AND ACCESSORIES (SEE CLASS 740 ALSO) | 031 | 00 |
| AIRCRAFT AND AIRPORT EQUIPMENT, PARTS, AND SUPPLIES | 035 | 00 |