The Valve,safety Relief, cataloged under National Stock Number 4820-00-776-6886, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Circor Aerospace, Inc. Dba Circor Aerospace Inc. Government technical data includes 25 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-776-6886 |
| Primary Part Number | 5173A-4TB-350 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Circor Aerospace, Inc. Dba Circor Aerospace Inc |
| Status | ACTIVE |
| Connection Style | GASKET SEAL(BOSS) SECOND END |
| Thread Class | 3B SECOND END |
| Connection Style | FLARED (TUBE) FIRST END |
| Thread Series Designator | UNF SECOND END |
| Thread Direction | RIGHT-HAND SECOND END |
| Flow Control Device | POPPET |
| Opening Pressure Setting | 350.0 POUNDS PER SQUARE INCH LBS |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END |
| Material | ALUMINUM ALLOY OVERALL |
| Surface Treatment | ANODIZE LOCATION NOT OTHERWISE SPECIFIED |
| Seat Angle | 37.0 DEGREES FIRST END |
| Nominal Thread Size | 0.437 INCHES FIRST END IN |
| Style Designator | STRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY. |
| Operating Pressure | 2500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Media for Which Designed | HYDRAULIC FLUID, SILICATE-ESTER BASE SINGLE RESPONSE |
| Disk Loading Method | SPRING |
| Nominal Thread Size | 0.438 INCHES SECOND END IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Features Provided | PRESSURE TIGHT OUTLET SIDE |
| Maximum Operating Temp | 300.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Thread Direction | RIGHT-HAND FIRST END |
| Connection Type | THREADED INTERNAL BOSS SECOND END |
| Adjustable Pressure Range | +265.0 TO 380.0 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A FIRST END A |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| D8497-63-1 | Chief of Engineers Dept of Army (USA) |
| D8497-63-1 | Cecom Lr Center (USA) |
| 5173A-4TB-350 PRIMARY | Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA) |
| D8497-63-1 | Drs Environmental Systems Inc (USA) |
| 8497-63-1 | Chief of Engineers Dept of Army (USA) |
| 5183A4TB350 | Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA) |
| D8497-63-1 | Hdt Expeditionary Systems Inc (USA) |
| D8497-63-1 | Keco Industries, Inc. (USA) |
| 8497-63-1 | Cecom Lr Center (USA) |
| 27391 | Triumph Thermal Systems - Maryland, Inc. (USA) |
NSN 4820-00-776-6886 is a Valve,safety Relief, manufactured by Circor Aerospace, Inc. Dba Circor Aerospace Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-776-6886 has 10 cross-referenced part numbers: D8497-63-1 (Chief of Engineers Dept of Army), D8497-63-1 (Cecom Lr Center), 5173A-4TB-350 (Circor Aerospace, Inc. Dba Circor Aerospace Inc), D8497-63-1 (Drs Environmental Systems Inc), 8497-63-1 (Chief of Engineers Dept of Army) and 5 more.
There are 8 known substitutes for 4820-00-776-6886: 5360-00-003-3937, 3020-00-541-7418, 3110-00-702-1556 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 5173A-4TB-350: Connection Style: GASKET SEAL(BOSS) SECOND END; Thread Class: 3B SECOND END; Connection Style: FLARED (TUBE) FIRST END; Thread Series Designator: UNF SECOND END. 25 total characteristics are documented in the Federal Logistics Information System.