| Abbreviation | Definition |
|---|---|
| FPBFA | Pipefitter (coppersmith) Fireman Apprentice |
| FPBFN | pefitter (coppersmith) Fireman |
| FPBFN | Pipefitter (coppersmith) Fireman |
| FPBFR | pefitter (coppersmith) Fireman Recruit |
| FPBFR | Pipefitter (coppersmith) Fireman Recruit |
| FPC | pefitter Chief Petty Officer |
| FPC | Pipefitter Chief Petty Officer |
| FPFA | pefitter Fireman Apprentice |
| FPFA | Pipefitter Fireman Apprentice |
| FPFN | pefitter Fireman |
| FPFN | Pipefitter Fireman |
| FPFR | pefitter Fireman Recruit |
| FPFR | Pipefitter Fireman Recruit |
| FPG1 | pefitter (shipboard) Petty Officer 1st Class |
| FPG1 | Pipefitter (shipboard) Petty Officer 1st Class |
| FPG2 | pefitter (shipboard) Petty Officer 2nd Class |
| FPG2 | Pipefitter (shipboard) Petty Officer 2nd Class |
| FPG3 | pefitter (shipboard) Petty Officer 3rd Class |
| FPG3 | Pipefitter (shipboard) Petty Officer 3rd Class |
| FPGC | pefitter (shipboard) Chief Petty Officer |