The Valve,safety Relief, cataloged under National Stock Number 4820-00-287-4675, 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 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-287-4675 |
| Primary Part Number | 21106 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Hydro-Aire Aerospace Corp |
| Status | CANCELLED |
| Thread Quantity Per Inch | 18 FIRST END |
| Disk Loading Method | SPRING |
| Connection Type | THREADED INTERNAL BOSS FIRST END |
| Connection Style | GASKET SEAL(BOSS) FIRST END |
| Mounting Facility | THREADED FASTENER |
| Adjustable Pressure Range | +2300.0 TO 3850.0 POUNDS PER SQUARE INCH LBS |
| Thread Direction | RIGHT-HAND FIRST END |
| Bonnet Attachment Method | INTEGRAL |
| Bonnet Type | INSIDE SCREW |
| Surface Treatment | ANODIZE LOCATION NOT OTHERWISE SPECIFIED |
| Opening Pressure Setting | 3400.0 POUNDS PER SQUARE INCH LBS |
| Style Designator | ANGLE W/OFFSET |
| Media for Which Designed | HYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE |
| Thread Series Designator | UNF FIRST END |
| Operating Pressure | 3850.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.562 INCHES FIRST END IN |
| Features Provided | BONNET PACKING |
| Thread Class | 3B FIRST END |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| AA31306H | Eaton Aerospace, Llc Dba Jackson South (USA) |
| 4820PL1332262 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| AN6279-6CD | Aeronautical Standards Group Dept of Navy and Air Force (USA) |
| 2365274 | The Boeing Company (USA) |
| HPLVA0 | Benbow Mfg Corp (USA) |
| 1030 | Droitcour Co (USA) |
| HPLVA0 | Prosperity a Div of Ametek Inc (USA) |
| 21106 PRIMARY | Hydro-Aire Aerospace Corp (USA) |
NSN 4820-00-287-4675 is a Valve,safety Relief, manufactured by Hydro-Aire Aerospace Corp, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-287-4675 has 8 cross-referenced part numbers: AA31306H (Eaton Aerospace, Llc Dba Jackson South), 4820PL1332262 (Jednolity Indeks Materialowy - Uniform Material Index), AN6279-6CD (Aeronautical Standards Group Dept of Navy and Air Force), 2365274 (The Boeing Company), HPLVA0 (Benbow Mfg Corp) and 3 more.
There are 11 known substitutes for 4820-00-287-4675: 5940-00-502-6457, 5330-00-525-4125, 4820-00-529-4189 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for 21106: Thread Quantity Per Inch: 18 FIRST END; Disk Loading Method: SPRING; Connection Type: THREADED INTERNAL BOSS FIRST END; Connection Style: GASKET SEAL(BOSS) FIRST END. 19 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-287-4675 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.