| PSC | Description
|
| 6004 | Rotary joints |
| 6005 | Couplers, splitters, & mixers |
| 6006 | Attenuators |
| 6007 | Filters |
| 6008 | Optical multiplexers/demultiplexers |
| 6010 | Fiber optic conductors |
| 6015 | Fiber optic cables |
| 6020 | Fiber optic cable assembly & harnes |
| 6021 | Fiber optic switches |
| 6025 | Fiber optic transmitters |
| 6026 | Fiber optic receivers |
| 6029 | Fiber optic repeaters |
| 6030 | Fiber optic devices |
| 6031 | Integrated optical circuits |
| 6032 | Fiber optic light sources |
| 6033 | Fiber optic photo detectors |
| 6034 | Fiber optic mod/demodulators |
| 6035 | Fiber optic light/image transfer |
| 6040 | Fiber optic sensors |
| 6050 | Fiber optic passive devices |
| 6060 | Fiber optic interconnectors |
| 6070 | Fiber optic accessories & supplies |
| 6080 | Fiber optic kits & sets |
| 6099 | Misc fiber optic components |