The Valve,restrictor Check, cataloged under National Stock Number 4820-00-032-8391, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road). Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-032-8391 |
| Primary Part Number | 402681-3 |
| Item Name | Valve,restrictor Check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| Status | CANCELLED |
| Operating Pressure | 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES FIRST END IN |
| Thread Quantity Per Inch | 18 FIRST END |
| Style Designator | STRAIGHT THRU |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Thread Series Designator | UN FIRST END |
| Media for Which Designed | HYDRAULIC FLUID, MINERAL BASE SINGLE RESPONSE |
| Material | RUBBER SYNTHETIC PACKING |
| Seat Angle | 37.0 DEGREES FIRST END |
| Material | ALUMINUM ALLOY BODY |
| Flow Control Device | CONE |
| Thread Direction | RIGHT-HAND FIRST END |
| Thread Class | 3A FIRST END A |
| Connection Style | FLARED (TUBE) FIRST END |
| Aperture Diameter | 0.055 INCHES NOMINAL IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 402681-3 | Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div (USA) |
| GU8-2-2-8DR046 | L3harris Technologies, Inc Div Space & Airborne Systems (USA) |
| 1139387 | The Boeing Company (USA) |
| 1139387 | The Boeing Company (USA) |
| 402681-3 PRIMARY | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| 36020 | Acoustical Labs Inc (USA) |
NSN 4820-00-032-8391 is a Valve,restrictor Check, manufactured by Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road), classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-032-8391 has 6 cross-referenced part numbers: 402681-3 (Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div), GU8-2-2-8DR046 (L3harris Technologies, Inc Div Space & Airborne Systems), 1139387 (The Boeing Company), 1139387 (The Boeing Company), 402681-3 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)) and 1 more.
There are 5 known substitutes for 4820-00-032-8391: 5935-00-614-0631, 8040-00-825-3621, 5310-01-312-7125 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 402681-3: Operating Pressure: 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Nominal Outside Diameter Tube Accommodated: 0.500 INCHES FIRST END IN; Thread Quantity Per Inch: 18 FIRST END; Style Designator: STRAIGHT THRU. 15 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-032-8391 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.