The Valve,bleeder,hydraulic System, cataloged under National Stock Number 4820-01-435-8904, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-435-8904 |
| Primary Part Number | 1741AS537 |
| Item Name | Valve,bleeder,hydraulic System |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Connection Style | PLAIN (PIPE) FIRST END |
| Style Designator | STRAIGHT THRU |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | COPPER ALLOY SEAT |
| Thread Series Designator | NPTF FIRST END |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Thread Direction | RIGHT-HAND FIRST END |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Flow Control Device | BALL |
| Material | COPPER ALLOY BODY |
| Valve Operation Method | MANUAL |
| Operating Pressure | 6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 1741AS537-1 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 1741AS537 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| V104 | Ldi Industries, Inc. Dba Ldi Industries Inc (USA) |
NSN 4820-01-435-8904 is a Valve,bleeder,hydraulic System, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-435-8904 has 3 cross-referenced part numbers: 1741AS537-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 1741AS537 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), V104 (Ldi Industries, Inc. Dba Ldi Industries Inc).
There are 2 known substitutes for 4820-01-435-8904: 3110-00-114-5996, 4720-01-125-4474. Verify interchangeability with system specifications before substitution.
Key specifications for 1741AS537: Connection Style: PLAIN (PIPE) FIRST END; Style Designator: STRAIGHT THRU; Nominal Thread Size: 0.500 INCHES FIRST END IN; Material: STEEL CORROSION RESISTING FLOW CONTROL DEVICE. 15 total characteristics are documented in the Federal Logistics Information System.