The O-Ring, cataloged under National Stock Number 5331-01-421-4267, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 4 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-421-4267 |
| Primary Part Number | 3354AS258-2 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Cross-Sectional Height | 0.026 INCHES NOMINAL IN |
| Hardness Rating | 60.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM |
| Center Hole Diameter | 0.504 INCHES NOMINAL 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 |
|---|---|
| 3354AS258-2 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 3354AS258-2 | Lenox Instrument Co., Inc. (USA) |
NSN 5331-01-421-4267 is a O-Ring, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-421-4267 has 2 manufacturer part numbers on file: 3354AS258-2 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 3354AS258-2 (Lenox Instrument Co., Inc.).
Key specifications for 3354AS258-2: Cross-Sectional Height: 0.026 INCHES NOMINAL IN; Hardness Rating: 60.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM; Center Hole Diameter: 0.504 INCHES NOMINAL IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 4 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.