The Valve,safety Relief, cataloged under National Stock Number 4820-00-504-8590, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Hydro-Aire Aerospace Corp. Government technical data includes 12 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-504-8590 |
| Primary Part Number | 72498 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Hydro-Aire Aerospace Corp |
| Status | ACTIVE |
| Nominal Thread Size | 0.562 INCHES FIRST END IN |
| Flow Control Device | POPPET |
| Thread Class | 3B FIRST END |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES FIRST END IN |
| Valve Operation Method | AUTOMATIC |
| Connection Style | GASKET SEAL(BOSS) FIRST END |
| Connection Type | THREADED INTERNAL BOSS FIRST END |
| Style Designator | STRAIGHT THRU |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END |
| Thread Quantity Per Inch | 18 FIRST END |
| Thread Direction | RIGHT-HAND FIRST END |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 72498 | Transdigm Inc Dba Adel Wiggins Group Div Adel Wiggins (USA) |
| 128SCH136-3 | Northrop Grumman Systems Corporation (USA) |
| 72498 PRIMARY | Hydro-Aire Aerospace Corp (USA) |
| 128SCH136-3 | Northrop Grumman Systems Corporation (USA) |
NSN 4820-00-504-8590 is a Valve,safety Relief, manufactured by Hydro-Aire Aerospace Corp, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-504-8590 has 4 cross-referenced part numbers: 72498 (Transdigm Inc Dba Adel Wiggins Group Div Adel Wiggins), 128SCH136-3 (Northrop Grumman Systems Corporation), 72498 (Hydro-Aire Aerospace Corp), 128SCH136-3 (Northrop Grumman Systems Corporation).
There are 2 known substitutes for 4820-00-504-8590: 5325-00-290-8028, 5945-00-973-4144. Verify interchangeability with system specifications before substitution.
Key specifications for 72498: Nominal Thread Size: 0.562 INCHES FIRST END IN; Flow Control Device: POPPET; Thread Class: 3B FIRST END; Nominal Outside Diameter Tube Accommodated: 0.375 INCHES FIRST END IN. 12 total characteristics are documented in the Federal Logistics Information System.