| Owner: | Department Of Defense |
| Type: | Flat Car |
| AAR Class: | FMS: Specialty Ordinary flat car for general service. This car has flooring laid over sills and without sides or ends. |
| AAR Type: | F423 |
| Detail Info: | Flat Car, Load Limit: 200,000lb and greater, Equipped with cushioned draft gear/underframe, Inside length: 60-75ft |
| Plate: | B |
| Builder: | Thrall Car Manufacturing Co. |
| Max Gross Weight: | 394000 |
| Load Limit: | 301700 |
| Ext L/W/H: | 72' 10" / 10' 5" / 4' 1" |
| Int L/W/H: | 68' 0" / 10' 5" / 0' 0" |
