The O-Ring, cataloged under National Stock Number 5331-01-278-1754, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Fairbanks Morse, Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Fairbanks Morse, Llc (CAGE 7PZX0) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-278-1754 |
| Primary Part Number | B304305 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| B304305 PRIMARY | Fairbanks Morse, Llc (USA) |
| YC304305 | Fairbanks Morse, Llc (USA) |
| Reference | Meaning |
|---|---|
| B304305 | 3/9 Design control — primary reference U.S. Government activity |
| YC304305 | 5/9 Secondary reference U.S. Government activity |
| 304305 | 5/9 Secondary reference U.S. Government activity |
| 304305 | 5/9 Secondary reference Young Touchstone Company Div Young Touchstone |
| AM11476 SYM 4 | 5/9 Secondary reference Young Touchstone Company Div Young Touchstone |
NSN 5331-01-278-1754 is a O-Ring, manufactured by Fairbanks Morse, Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-278-1754 has 2 manufacturer part numbers on file: B304305 (Fairbanks Morse, Llc), YC304305 (Fairbanks Morse, Llc).
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.