The Seat,valve, cataloged under National Stock Number 4820-01-092-6147, 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 15 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-092-6147 |
| Primary Part Number | 845-2181282 PIECE 3 3IN |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Naval Ship Systems Command |
| Status | ACTIVE |
| Style Designator | THREADED FLANGED |
| Material | NICKEL ALLOY OVERALL |
| Material Document and Classification | QQ-N-281,CL B FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Series Designator | UNS SINGLE THREADED PORTION |
| Body Stepped Inside Diameter | 2.620 INCHES MINIMUM AND 2.630 INCHES MAXIMUM FIRST STEP IN |
| Body Stepped Inside Diameter | 3.053 INCHES MINIMUM AND 3.063 INCHES MAXIMUM SECOND STEP IN |
| Thread Length | 0.795 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Seat Angle in Deg | 30.000 NOMINAL |
| Thread Class | 3A SINGLE THREADED PORTION A |
| Nominal Thread Size | 3.516 INCHES SINGLE THREADED PORTION IN |
| Flange Diameter | 3.500 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 11-1/2 SINGLE THREADED PORTION |
| Under Flange Height | 0.810 INCHES NOMINAL IN |
| Seating Surface Shape | ANGULAR |
| Flange Seat to Disk End Height | 0.690 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 2620-920X12 PC3 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 845-2181282 PIECE 3 3IN PRIMARY | Naval Ship Systems Command (USA) |
| 2620-920X12 PC3 | Hydro-Aire Aerospace Corp (USA) |
| 845-2181282 | Naval Ship Systems Command (USA) |
NSN 4820-01-092-6147 is a Seat,valve, manufactured by Naval Ship Systems Command, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-092-6147 has 4 cross-referenced part numbers: 2620-920X12 PC3 (Electric Boat Corporation Div General Dynamics Electric Boat), 845-2181282 PIECE 3 3IN (Naval Ship Systems Command), 2620-920X12 PC3 (Hydro-Aire Aerospace Corp), 845-2181282 (Naval Ship Systems Command).
There are 12 known substitutes for 4820-01-092-6147: 4820-01-061-5106, 5360-01-068-7326, 4820-01-082-8833 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 845-2181282 PIECE 3 3IN: Style Designator: THREADED FLANGED; Material: NICKEL ALLOY OVERALL; Material Document and Classification: QQ-N-281,CL B FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Thread Series Designator: UNS SINGLE THREADED PORTION. 15 total characteristics are documented in the Federal Logistics Information System.