The O-Ring, cataloged under National Stock Number 5331-01-602-0638, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is W.w. Williams Company, the Llc Dba W W Williams Company-Midwest Division. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5331-01-602-0638 |
| Primary Part Number | DDE A5419970545 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | W.w. Williams Company, the Llc Dba W W Williams Company-Midwest Division |
| 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 |
|---|---|
| DDE A5419970545 PRIMARY | W.w. Williams Company, the Llc Dba W W Williams Company-Midwest Division (USA) |
| Reference | Meaning |
|---|---|
| A5419970545 | 5/9 Secondary reference W.w. Williams Company, the Llc Dba W W Williams Company-Midwest Division |
NSN 5331-01-602-0638 is a O-Ring, manufactured by W.w. Williams Company, the Llc Dba W W Williams Company-Midwest Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-602-0638 has 1 manufacturer part number on file: DDE A5419970545 (W.w. Williams Company, the Llc Dba W W Williams Company-Midwest Division).
Key specifications for DDE A5419970545: End Item Identification: FUEL GROUP. 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.