The Flange,gland,valve, cataloged under National Stock Number 4820-01-399-1817, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Superior Fabrication Company, Llc. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-399-1817 |
| Primary Part Number | 050593 |
| Item Name | Flange,gland,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Superior Fabrication Company, Llc |
| Status | ACTIVE |
| Flange Shape | ROUND |
| Flange Diameter | 5.530 INCHES IN |
| Nominal Center Hole Diameter | 4.750 INCHES IN |
| Material | ALUMINUM |
| 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 |
|---|---|
| 050593 PRIMARY | Superior Fabrication Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 050593 | 3/9 Design control — primary reference Brudi Equipment Inc |
NSN 4820-01-399-1817 is a Flange,gland,valve, manufactured by Superior Fabrication Company, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-399-1817 has 1 manufacturer part number on file: 050593 (Superior Fabrication Company, Llc).
1 possible match (shared part number, not a government interchangeability claim): 6515-01-531-3533. Verify interchangeability with system specifications before substitution.
Key specifications for 050593: Flange Shape: ROUND; Flange Diameter: 5.530 INCHES IN; Nominal Center Hole Diameter: 4.750 INCHES IN; End Item Identification: 3930-01-373-3625. 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.