The Seat,valve, cataloged under National Stock Number 4820-01-017-1273, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions. Government technical data includes 11 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-017-1273 |
| Primary Part Number | 6017340-001 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.500 INCHES NOMINAL IN |
| Flange Diameter | 4.251 INCHES NOMINAL IN |
| Body Outside Diameter | 3.748 INCHES NOMINAL IN |
| Seal Accommodation Type | GROOVED |
| Style Designator | PLAIN FLANGED |
| Material Document and Classification | MIL-S-18410,CLASS B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 2.500 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN |
| Seat Radius | 0.750 INCHES NOMINAL IN |
| Under Flange Height | 2.500 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Seating Surface Shape | RADIAL |
| 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 |
|---|---|
| 6017340-001 PRIMARY | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| PL501E456AFPC3 | 5/9 Secondary reference General Electric Co Naval and Drive Turbine Systems Dept |
| 6017340-001 | 5/9 Secondary reference Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand |
| 6017340-001 | 5/9 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| 101C428AB-1 | 3/9 Design control — primary reference General Electric Co Naval and Drive Turbine Systems Dept |
| X314419 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| X314419 | 5/9 Secondary reference Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand |
NSN 4820-01-017-1273 is a Seat,valve, manufactured by Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-017-1273 has 1 manufacturer part number on file: 6017340-001 (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions).
Key specifications for 6017340-001: Flange Seat to Disk End Height: 0.500 INCHES NOMINAL IN; Flange Diameter: 4.251 INCHES NOMINAL IN; Body Outside Diameter: 3.748 INCHES NOMINAL IN; Seal Accommodation Type: GROOVED. 11 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.