The O-Ring, cataloged under National Stock Number 5331-01-561-6991, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Young & Cunningham America, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-561-6991 |
| Primary Part Number | A3.4002S-1 1/2IN ITEM 6 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Young & Cunningham America, Inc. |
| Status | ACTIVE |
| 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 |
|---|---|
| A3.4002S-1 1/2IN ITEM 6 PRIMARY | Young & Cunningham America, Inc. (USA) |
NSN 5331-01-561-6991 is a O-Ring, manufactured by Young & Cunningham America, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-561-6991 has 1 manufacturer part number on file: A3.4002S-1 1/2IN ITEM 6 (Young & Cunningham America, Inc.).
Key specifications for A3.4002S-1 1/2IN ITEM 6: End Item Identification: NSC-420 (WMSL-750). 0 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.