The Seat,valve, cataloged under National Stock Number 4820-00-343-6979, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-343-6979 |
| Primary Part Number | 51-5-8 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| Status | ACTIVE |
| Thread Series Designator | UN SINGLE THREADED PORTION |
| Material | COPPER ALLOY OVERALL |
| Style Designator | PLAIN THREADED |
| Thread Length | 0.500 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Thread Quantity Per Inch | 16 SINGLE THREADED PORTION |
| Body Inside Diameter | 3.000 INCHES MINIMUM AND 3.001 INCHES MAXIMUM IN |
| Seating Surface Shape | ANGULAR |
| Nominal Thread Size | 3.750 INCHES SINGLE THREADED PORTION IN |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Seat Angle in Deg | 45.000 NOMINAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 51-5-8 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 51-5-8 | Kunkle Industries Inc Lonergan Valve Div (USA) |
| 012-500-0008 | Kunkle Industries Inc Lonergan Valve Div (USA) |
| 012.500.0008 | Kunkle Industries Inc Lonergan Valve Div (USA) |
| 012-500-0008 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 012-500-0008 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 51-5-8 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
NSN 4820-00-343-6979 is a Seat,valve, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-343-6979 has 7 cross-referenced part numbers: 51-5-8 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 51-5-8 (Kunkle Industries Inc Lonergan Valve Div), 012-500-0008 (Kunkle Industries Inc Lonergan Valve Div), 012.500.0008 (Kunkle Industries Inc Lonergan Valve Div), 012-500-0008 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team) and 2 more.
There are 9 known substitutes for 4820-00-343-6979: 5950-00-006-6382, 5930-00-232-6138, 6625-00-618-0932 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for 51-5-8: Thread Series Designator: UN SINGLE THREADED PORTION; Material: COPPER ALLOY OVERALL; Style Designator: PLAIN THREADED; Thread Length: 0.500 INCHES NOMINAL SINGLE THREADED PORTION IN. 11 total characteristics are documented in the Federal Logistics Information System.