The Retainer,seat,valve, cataloged under National Stock Number 4820-01-459-5635, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Sea Systems Command. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-459-5635 |
| Primary Part Number | 803-6983491 PC 29 |
| Item Name | Retainer,seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Outside Diameter | 5.245 INCHES NOMINAL IN |
| Valve Design Control Activity | 53711 |
| Material | PLASTIC |
| Material Document and Classification | ASTM D3013 ASSN STD SINGLE MATERIAL RESPONSE |
| Inside Diameter | 4.000 INCHES NOMINAL IN |
| Valve Size for Which Designed | 4.000 INCHES IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 6983491-29 | Naval Sea Systems Command (USA) |
| 803-6983491 | Naval Sea Systems Command (USA) |
| 803-6983491 PC 29 PRIMARY | Naval Sea Systems Command (USA) |
| 91-29 | Expandover Inc (USA) |
NSN 4820-01-459-5635 is a Retainer,seat,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-459-5635 has 4 cross-referenced part numbers: 6983491-29 (Naval Sea Systems Command), 803-6983491 (Naval Sea Systems Command), 803-6983491 PC 29 (Naval Sea Systems Command), 91-29 (Expandover Inc).
There are 11 known substitutes for 4820-01-459-5635: 2815-00-036-4642, 5920-00-280-5066, 2990-00-457-1824 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for 803-6983491 PC 29: Outside Diameter: 5.245 INCHES NOMINAL IN; Special Features: INSERT; Valve Design Control Activity: 53711; Material: PLASTIC. 7 total characteristics are documented in the Federal Logistics Information System.