The Seat,valve, cataloged under National Stock Number 4820-01-139-1689, 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 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-139-1689 |
| Primary Part Number | 803-5001048 PIECE 2 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Material | PLASTIC ACETAL BODY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| DS-2 | Speco Inc (USA) |
| 803-5001048 PIECE 2 PRIMARY | Naval Sea Systems Command (USA) |
| 803-5001048 | Naval Sea Systems Command (USA) |
NSN 4820-01-139-1689 is a Seat,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-139-1689 has 3 cross-referenced part numbers: DS-2 (Speco Inc), 803-5001048 PIECE 2 (Naval Sea Systems Command), 803-5001048 (Naval Sea Systems Command).
There are 8 known substitutes for 4820-01-139-1689: 5330-00-224-0086, 6210-01-133-7791, 3410-01-421-1723 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 803-5001048 PIECE 2: Material: PLASTIC ACETAL BODY. 1 total characteristics are documented in the Federal Logistics Information System.