The O-Ring, cataloged under National Stock Number 5331-01-249-7047, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Hughes and Hughes. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-249-7047 |
| Primary Part Number | 561-515-0004 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Hughes and Hughes |
| Status | ACTIVE |
| Temp Rating | 550.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Hardness Rating | 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM |
| Color | BLACK |
| Center Hole Diameter | 0.731 INCHES MINIMUM AND 0.747 INCHES MAXIMUM IN |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| 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 |
|---|---|
| 561-515-0004 | Hughes and Hughes (USA) |
| Reference | Meaning |
|---|---|
| KDAC-10380 | 5/9 Secondary reference U.S. Government activity |
| 561-515-0004 | 3/2 Design control — primary reference U.S. Government activity |
| 561-515-0004 | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| 561-515 | D/9 Drawing number reference only U.S. Government activity |
| KDAC-10380 | 5/9 Secondary reference Hughes and Hughes |
| 561-515-0004 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-01-249-7047 is a O-Ring, manufactured by Hughes and Hughes, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-249-7047 has 1 manufacturer part number on file: 561-515-0004 (Hughes and Hughes).
3 possible matches (shared part number, not a government interchangeability claim): 5331-01-250-7089, 5331-01-258-8242, 5331-01-647-7391. Verify interchangeability with system specifications before substitution.
Key specifications for 561-515-0004: Temp Rating: 550.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Hardness Rating: 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM; Color: BLACK. 6 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.