| 1 | HSC | Heli Service Inc. | | J | AVCODES |
| 2 | HSCA | HUNT SEED CO INC | | | SCAC4 |
| 3 | HSCB | HARTEL SHIPPING & CHARTERING B.V. | | | SCAC4 |
| 4 | HSCE | HEADWATERS SERVICES CORPORATION | | | SCAC4 |
| 5 | HSCF | HARRIS EXPRESS LLC | | | SCAC4 |
| 6 | HSCJ | HUGHES, SHIRLEY CORPORATION, THE | | | SCAC4 |
| 7 | HSCL | HADLEY SHIPPING CO LIMITED, THE | | | SCAC4 |
| 8 | HSCM | HANSCOMS TRUCK STOP INC | | | SCAC4 |
| 9 | HSCO | HORNE MOVING SYSTEMS INC | | | SCAC4 |
| 10 | HSCP | HUNTERDON DISPATCH LLC | | | SCAC4 |
| 11 | HSCQ | HARRISBURG STORAGE CO | | | SCAC4 |
| 12 | HSCR | H & S CONSTRUCTION INC | | | SCAC4 |
| 13 | HSCU | H&S CONTAINER GMBH | | D | BIC |
| 14 | HSCU | H & S CONTAINER GMBH | | | SCAC4 |
| 15 | HSCW | HORTEN SHIPPING CO | | | SCAC4 |
| 16 | HSCX | Steel Wheels Ltd. | added 7/1984; eliminated 7/1993; 1/1994-7/2005 (not listed) | | NAKINA |
| 17 | HSCX | Hammond Standish & Co. | 7/1930-4/1938 | | NAKINA |
| 18 | HSCX | Hammond Standish & Co. | Apr-38 | | NRHS |
| 19 | HSCX | Steel Wheels Ltd. | added 7/84; eliminated 7/93; 1/94-7/2000 | | NRHS |
| 20 | HSCX | *HAMMOND STANDISH & CO. | | | PWRC |
| 21 | HSCX | *HORRY COUNTY RAILROAD - SOUTH CAROLINA | | | PWRC |
| 22 | HSCX | +STEEL WHEELS LTD | | | PWRC |
| 23 | HSCX | Hammond Standish (Steel Wheels) | | | RSRV |
| 24 | HSCX | STEEL WHEELS LIMITED | | | SCAC4 |
| 25 | HSCY | HASLER & COMPANY INC | | | SCAC4 |
| 26 | HSCZ | HIGHLINE SEVEN COOP ELEVATOR | | | PWRC |
