The O-Ring, cataloged under National Stock Number 5331-01-537-3359, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Textron Aviation Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-537-3359 |
| Primary Part Number | A-1633-71 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Textron Aviation Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.073 INCHES NOMINAL IN |
| Center Hole Diameter | 1.412 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE NITRILE |
| 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 |
|---|---|
| A-1633-71 PRIMARY | Textron Aviation Inc (USA) |
| 5-780-47-071 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| Reference | Meaning |
|---|---|
| A-1633-71 | 3/9 Design control — primary reference Cessna Aircraft Company Dba Textron Aviation |
NSN 5331-01-537-3359 is a O-Ring, manufactured by Textron Aviation Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-537-3359 has 2 manufacturer part numbers on file: A-1633-71 (Textron Aviation Inc), 5-780-47-071 (Parker-Hannifin Corp Div O-Ring Division).
Key specifications for A-1633-71: Cross-Sectional Height: 0.073 INCHES NOMINAL IN; Center Hole Diameter: 1.412 INCHES NOMINAL IN; Material: RUBBER BUTADIENE NITRILE. 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.