The Seat,valve, cataloged under National Stock Number 4820-01-075-6588, 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 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 15 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-01-075-6588 |
| Primary Part Number | 803-2177934-X7XX-19 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Naval Ship Systems Command |
| Status | CANCELLED |
| Material | NICKEL ALLOY OVERALL |
| Style Designator | THREADED FLANGED |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Series Designator | UNS SINGLE THREADED PORTION |
| Flange Seat to Disk End Height | 0.247 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 18 SINGLE THREADED PORTION |
| Thread Class | 3A SINGLE THREADED PORTION A |
| Seat Angle in Deg | 45.000 NOMINAL |
| Seating Surface Shape | ANGULAR |
| Flange Diameter | 2.125 INCHES NOMINAL IN |
| Thread Length | 0.406 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Nominal Thread Size | 1.938 INCHES SINGLE THREADED PORTION IN |
| Under Flange Height | 0.406 INCHES NOMINAL IN |
| Body Inside Diameter | 1.500 INCHES NOMINAL IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 803-2177934 | Naval Ship Systems Command (USA) |
| SS845-1889568AS | Naval Sea Systems Command (USA) |
| 2620-902X6 | Naval Sea Systems Command (USA) |
| SS845-1889568ASSYCPC4 1 1/2IN | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| 4SS845-1889568ASSYCPC4 1/2IN | Litho Development and Research (USA) |
| 2620-902 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| SS845-1889568 | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| 12620-902X6 | Seifert Ndt Apparatus and Supply Sales Inc (USA) |
| SS845-1889587ASSYC PC4 1 1-2IN | Naval Ship Systems Command (USA) |
| 2620-902 ASSYC PC4 1 1-2IN | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 4SS845-1889568 | Litho Development and Research (USA) |
| 803-2177934-7XX-19 | Naval Sea Systems Command (USA) |
| SS845-1889587 | Naval Ship Systems Command (USA) |
| 803-2177934 | Naval Sea Systems Command (USA) |
| 803-2177934-X7XX-19 PRIMARY | Naval Ship Systems Command (USA) |
NSN 4820-01-075-6588 is a Seat,valve, manufactured by Naval Ship Systems Command, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-01-075-6588 has 15 cross-referenced part numbers: 803-2177934 (Naval Ship Systems Command), SS845-1889568AS (Naval Sea Systems Command), 2620-902X6 (Naval Sea Systems Command), SS845-1889568ASSYCPC4 1 1/2IN (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 4SS845-1889568ASSYCPC4 1/2IN (Litho Development and Research) and 10 more.
There are 12 known substitutes for 4820-01-075-6588: 4820-00-871-8935, 4820-01-043-3626, 4820-01-067-3653 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 803-2177934-X7XX-19: Material: NICKEL ALLOY OVERALL; Style Designator: THREADED FLANGED; Material Document and Classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Thread Series Designator: UNS SINGLE THREADED PORTION. 14 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-01-075-6588 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.