The O-Ring, cataloged under National Stock Number 5331-01-543-1328, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Boeing Defence Australia Ltd Div Defense, Space & Security. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-543-1328 |
| Primary Part Number | NAS1612-8A |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Boeing Defence Australia Ltd Div Defense, Space & Security |
| Status | ACTIVE |
| Cross-Sectional Height | 0.087 INCHES NOMINAL IN |
| Center Hole Diameter | 0.644 INCHES NOMINAL IN |
| Material | RUBBER ETHYLENE-PROPYLENE CLASS EPM |
| 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 |
|---|---|
| NAS1612-8A | Boeing Defence Australia Ltd Div Defense, Space & Security (AUS) |
| NAS1612-8A | Boeing Defence Australia Ltd (AUS) |
| Reference | Meaning |
|---|---|
| NAS1613 | 3/1 Design control — primary reference U.S. Government activity |
| 5331PL1878299 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| NAS1612-8A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5331-01-543-1328 is a O-Ring, manufactured by Boeing Defence Australia Ltd Div Defense, Space & Security, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-543-1328 has 2 manufacturer part numbers on file: NAS1612-8A (Boeing Defence Australia Ltd Div Defense, Space & Security), NAS1612-8A (Boeing Defence Australia Ltd).
Key specifications for NAS1612-8A: Cross-Sectional Height: 0.087 INCHES NOMINAL IN; Center Hole Diameter: 0.644 INCHES NOMINAL IN; Material: RUBBER ETHYLENE-PROPYLENE CLASS EPM. 3 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.