| 511 | Dew Point Transmitters | Company Product |
| 512 | Dewar Tanks | Company Product |
| 513 | Dewatering & Pumping Contractors | Company Product |
| 514 | Dewatering Contractors | Company Product |
| 515 | Dewatering Drainage Pumps | Company Product |
| 516 | Dewatering Pumps | Company Product |
| 517 | Dewpoint Meters | Company Product |
| 518 | Dewval 838 | Company Product |
| 519 | Dexron III | Company Product |
| 520 | Dexron VI | Company Product |
| 521 | Diabetes | Company Product |
| 522 | Diabetic | Company Product |
| 523 | Diagnostic Equipment | Company Product |
| 524 | Diagnostic Reagents | Company Product |
| 525 | Diagnostic Tools | Company Product |
| 526 | Diagonal Brace | Company Product |
| 527 | Diagonal Packings | Company Product |
| 528 | Diagonal Pliers | Company Product |
| 529 | Dial Comparators | Company Product |
| 530 | Dial Gauges | Company Product |
| 531 | Dial Indicators | Company Product |
| 532 | Dial Protractors | Company Product |
| 533 | Dial Thermometers | Company Product |
| 534 | Dialog Controllers | Company Product |
| 535 | Diamond Abrasives | Company Product |
| 536 | Diamond Abrasives Wheel | Company Product |
| 537 | Diamond Blades | Company Product |
| 538 | Diamond Coated Saw Blade | Company Product |
| 539 | Diamond Coated Saw Blades | Company Product |
| 540 | Diamond Consumables | Company Product |