The O-Ring, cataloged under National Stock Number 5331-01-561-2791, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Bird-Johnson Propeller Company, Llc. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-561-2791 |
| Primary Part Number | O-3-2-7 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Bird-Johnson Propeller Company, Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 111157002-50 | Bird-Johnson Propeller Company, Llc (USA) |
| O-3-2-7 PRIMARY | Bird-Johnson Propeller Company, Llc (USA) |
| ZAM28 | Rolls Royce Australia Services Pty Limited (AUS) |
| Reference | Meaning |
|---|---|
| O-3-2-7 | 5/9 Secondary reference Rolls-Royce Marine Australia Pty Ltd |
NSN 5331-01-561-2791 is a O-Ring, manufactured by Bird-Johnson Propeller Company, Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-561-2791 has 3 manufacturer part numbers on file: 111157002-50 (Bird-Johnson Propeller Company, Llc), O-3-2-7 (Bird-Johnson Propeller Company, Llc), ZAM28 (Rolls Royce Australia Services Pty Limited).
Key specifications for O-3-2-7: End Item Identification: USED ON ANZAC CLASS OIL DISTRIBUTION BOX VALVE ROD ASSY P/N 111157002 AND OVERHAUL KIT P/N 111138112. 0 specifications are documented in the U.S. Government catalog.
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.