The O-Ring, cataloged under National Stock Number 5331-01-652-3483, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc. 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 | 5331-01-652-3483 |
| Primary Part Number | 6540-904-911 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.072 INCHES NOMINAL IN |
| Material Document and Classification | MIL-P-5315 (MS29513) MIL SPEC SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 0.351 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 |
|---|---|
| 5021BN150 REV A ITM NO 9 | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| 6540-904-911 PRIMARY | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
NSN 5331-01-652-3483 is a O-Ring, manufactured by Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-652-3483 has 2 manufacturer part numbers on file: 5021BN150 REV A ITM NO 9 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 6540-904-911 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc).
Key specifications for 6540-904-911: Cross-Sectional Height: 0.072 INCHES NOMINAL IN; Material Document and Classification: MIL-P-5315 (MS29513) MIL SPEC SINGLE MATERIAL RESPONSE; Center Hole Diameter: 0.351 INCHES NOMINAL IN; End Item Identification: SWING CHECK VALVE. 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.