The O-Ring, cataloged under National Stock Number 5331-01-166-5299, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corp Div O-Ring Division. Government technical data includes 7 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-166-5299 |
| Primary Part Number | 2-033-47-071 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corp Div O-Ring Division |
| Status | ACTIVE |
| Temp Rating | -55.0 FAHRENHEIT AND 180.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Material Document and Classification | MIL-R-7362 MIL SPEC SINGLE MATERIAL RESPONSE |
| Elongation Percentage | 250 MAXIMUM |
| Center Hole Diameter | 1.971 INCHES MINIMUM AND 2.007 INCHES MAXIMUM IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| 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 |
|---|---|
| 2-033-47-071 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| MS29561-033 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| MS29561-033 | 5/9 Secondary reference U.S. Government activity |
| SAE-AS29561 | 3/1 Design control — primary reference Sae International Dba Sae International |
| 2-033-47-071 | 5/9 Secondary reference U.S. Government activity |
| MS29561-033 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-01-166-5299 is a O-Ring, manufactured by Parker-Hannifin Corp Div O-Ring Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-166-5299 has 2 manufacturer part numbers on file: 2-033-47-071 (Parker-Hannifin Corp Div O-Ring Division), MS29561-033 (Sae International Dba Sae International).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-563-5269. Verify interchangeability with system specifications before substitution.
Key specifications for 2-033-47-071: Temp Rating: -55.0 FAHRENHEIT AND 180.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; Material Document and Classification: MIL-R-7362 MIL SPEC SINGLE MATERIAL RESPONSE. 7 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.