The Disk,valve, cataloged under National Stock Number 4820-01-067-3957, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Electric Boat Corporation Div General Dynamics Electric Boat. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-01-067-3957 |
| Primary Part Number | 2620-902X6 PIECE 23 1 1/2IN |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Electric Boat Corporation Div General Dynamics Electric Boat |
| Status | CANCELLED |
| Material | NICKEL ALLOY |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 2620-902X6 PIECE 23 1 1/2IN PRIMARY | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 70302690AND70302691 | Walworth Co Marine Div (USA) |
| 845-1889568 PIECE 23 1 1/2IN | Naval Ship Systems Command (USA) |
| 845-1889587ASSYAAPC23 1 1-2IN | Naval Ship Systems Command (USA) |
| 2620-902ASSYAAPC23 1 1-2IN | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 2620-902X6 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 845-1889587ASSYAAPC23-11/2 | The Walworth Company (USA) |
| 70302690 | Walworth Co Marine Div (USA) |
| 845-1889568 | Naval Ship Systems Command (USA) |
NSN 4820-01-067-3957 is a Disk,valve, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-01-067-3957 has 9 cross-referenced part numbers: 2620-902X6 PIECE 23 1 1/2IN (Electric Boat Corporation Div General Dynamics Electric Boat), 70302690AND70302691 (Walworth Co Marine Div), 845-1889568 PIECE 23 1 1/2IN (Naval Ship Systems Command), 845-1889587ASSYAAPC23 1 1-2IN (Naval Ship Systems Command), 2620-902ASSYAAPC23 1 1-2IN (Electric Boat Corporation Div General Dynamics Electric Boat) and 4 more.
There are 6 known substitutes for 4820-01-067-3957: 4820-01-075-6588, 4820-01-115-1995, 4820-01-129-8013 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for 2620-902X6 PIECE 23 1 1/2IN: Material: NICKEL ALLOY. 1 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-01-067-3957 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.