The O-Ring, cataloged under National Stock Number 5331-00-543-6490, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-543-6490 |
| Primary Part Number | A-A-59588 CL 2B |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| Status | ACTIVE |
| Cross-Sectional Height | 0.244 INCHES MINIMUM AND 0.256 INCHES MAXIMUM IN |
| Center Hole Diameter | 5.681 INCHES MINIMUM AND 5.761 INCHES MAXIMUM IN |
| Material | RUBBER SYNTHETIC |
| 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-A-59588 CL 2B | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| Reference | Meaning |
|---|---|
| PD5330-229-11 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-00-543-6490 is a O-Ring, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-543-6490 has 1 manufacturer part number on file: A-A-59588 CL 2B (Federal Commercial Item Description Promulgated by General Services Administration Washington DC).
Key specifications for A-A-59588 CL 2B: Cross-Sectional Height: 0.244 INCHES MINIMUM AND 0.256 INCHES MAXIMUM IN; Center Hole Diameter: 5.681 INCHES MINIMUM AND 5.761 INCHES MAXIMUM IN; Material: RUBBER SYNTHETIC. 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.