The Valve,restrictor Check, cataloged under National Stock Number 4820-01-135-1676, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Pneudraulics, Inc.. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-01-135-1676 |
| Primary Part Number | 6125-6 |
| Item Name | Valve,restrictor Check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Pneudraulics, Inc. |
| Status | CANCELLED |
| Thread Class | 3B FIRST END |
| Aperture Diameter | 0.030 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND FIRST END |
| Connection Style | GASKET SEAL (BOSS) FIRST END |
| Mounting Position | HORIZONTAL |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Thread Series Designator | UNJS SECOND END |
| Connection Type | THREADED INTERNAL BOSS FIRST END |
| Thread Class | 3A SECOND END A |
| Nominal Thread Size | 0.562 INCHES FIRST END IN |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Quantity Per Inch | 18 FIRST END |
| Flow Control Device | POPPET |
| Thread Direction | RIGHT-HAND SECOND END |
| Valve Operation Method | AUTOMATIC |
| Style Designator | STRAIGHT THRU |
| Nominal Thread Size | 0.562 INCHES SECOND END IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 6125-2 | Pneudraulics, Inc. (USA) |
| A51H9093-5 | Northrop Grumman Systems Corporation (USA) |
| 6125-6 PRIMARY | Pneudraulics, Inc. (USA) |
| A51H9093-3 | Northrop Grumman Systems Corporation (USA) |
| A51H9093-5 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems (USA) |
| A51H9093-3 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems (USA) |
NSN 4820-01-135-1676 is a Valve,restrictor Check, manufactured by Pneudraulics, Inc., classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-01-135-1676 has 6 cross-referenced part numbers: 6125-2 (Pneudraulics, Inc.), A51H9093-5 (Northrop Grumman Systems Corporation), 6125-6 (Pneudraulics, Inc.), A51H9093-3 (Northrop Grumman Systems Corporation), A51H9093-5 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems) and 1 more.
There are 10 known substitutes for 4820-01-135-1676: 3455-00-232-4106, 3455-00-260-3322, 3455-00-357-0315 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for 6125-6: Thread Class: 3B FIRST END; Aperture Diameter: 0.030 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND FIRST END; Connection Style: GASKET SEAL (BOSS) FIRST END. 19 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-01-135-1676 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.