The Seat,valve, cataloged under National Stock Number 4820-01-264-7475, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Ship Systems Command. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-01-264-7475 |
| Primary Part Number | 803-1385714-8-6 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Naval Ship Systems Command |
| Status | CANCELLED |
| Thread Quantity Per Inch | 18 SINGLE THREADED PORTION |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | UNS SINGLE THREADED PORTION |
| Style Designator | PLAIN THREADED |
| Material Document and Classification | ASTM B164 ASSN STD 1ST MATERIAL RESPONSE OR QQ-N-286 FED SPEC 2ND MATERIAL RESPONSE OR QQ-N-288 FED SPEC 3RD MATERIAL RESPONSE OVERALL |
| Seating Surface Shape | O-RING |
| Body Inside Diameter | 2.062 INCHES NOMINAL IN |
| Thread Length | 0.250 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Thread Class | 3A SINGLE THREADED PORTION A |
| Nominal Thread Size | 2.625 INCHES SINGLE THREADED PORTION IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 803-1385714-8-6 PRIMARY | Naval Ship Systems Command (USA) |
| 803-1385714-8-0 | Naval Ship Systems Command (USA) |
| 4820PL1443401 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| 70069 | The Walworth Company (USA) |
NSN 4820-01-264-7475 is a Seat,valve, manufactured by Naval Ship Systems Command, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-01-264-7475 has 4 cross-referenced part numbers: 803-1385714-8-6 (Naval Ship Systems Command), 803-1385714-8-0 (Naval Ship Systems Command), 4820PL1443401 (Jednolity Indeks Materialowy - Uniform Material Index), 70069 (The Walworth Company).
There are 5 known substitutes for 4820-01-264-7475: 5955-01-052-6176, 5895-01-368-4590, 1005-01-480-4709 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 803-1385714-8-6: Thread Quantity Per Inch: 18 SINGLE THREADED PORTION; Material: NICKEL ALLOY OVERALL; Thread Series Designator: UNS SINGLE THREADED PORTION; Style Designator: PLAIN THREADED. 11 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-01-264-7475 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.