| 1 | RCSX | Railroad Solutions, LLC | 7/2005 (not listed) | | NAKINA |
| 2 | RCSX | Railroad Car Service Corp. | added 4/1985; eliminated 1/1987 | | NAKINA |
| 3 | RCSX | North American Car Corp. | added 7/1960; 4/1961-4/1970; eliminated 10/1974 | | NAKINA |
| 4 | RCSX | Railway Tank Car Service, Inc. | 1/1946 (not listed); 4/1947-10/1957; eliminated 7/1960 | | NAKINA |
| 5 | RCSX | Railway Tank Car Service, Inc. | 1/52-10/57; eliminated 7/60 | | NRHS |
| 6 | RCSX | North American Car Corp. | added 7/60; 4/61-4/70; eliminated 10/74 | | NRHS |
| 7 | RCSX | Railroad Car Service Corp. | added 4/85; eliminated 1/87 | | NRHS |
| 8 | RCSX | *NORTH AMERICAN CAR CORP. [RAILWAY TANK CAR SERVICE, INC] | | | PWRC |
| 9 | RCSX | *RAILROAD CAR SERVICE CORP. | | | PWRC |
| 10 | RCSX | +RAILCAR SOLUTIONS, LLC | | | PWRC |
| 11 | RCSX | Red-Corn Scrap Metals | | | RSRV |
| 12 | RCSX | RAILCAR SOLUTIONS LLC | | | SCAC4 |