The Valve,safety Relief, cataloged under National Stock Number 4820-00-529-4177, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-529-4177 |
| Primary Part Number | MC1603-2801 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace |
| Status | ACTIVE |
| Surface Treatment | ANODIZE LOCATION NOT OTHERWISE SPECIFIED |
| Style Designator | STRAIGHT THRU W/BAFFLE |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Seat Angle | 37.0 DEGREES FIRST END |
| Bonnet Type | INSIDE SCREW |
| Material | ALUMINUM ALLOY BODY |
| Thread Class | 3A FIRST END A |
| Thread Series Designator | UNF FIRST END |
| Features Provided | VALVE STEM LOCK SHIELD AND BONNET PACKING |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Material | ALUMINUM ALLOY AND STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Disk Loading Method | SPRING |
| Thread Quantity Per Inch | 20 FIRST END |
| Thread Direction | RIGHT-HAND FIRST END |
| Bonnet Attachment Method | INTEGRAL |
| Nominal Thread Size | 0.437 INCHES FIRST END IN |
| Connection Style | FLARED (TUBE) FIRST END |
| Material | ALUMINUM ALLOY SEAT |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Opening Pressure Setting | 2800.0 POUNDS PER SQUARE INCH LBS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MC1603-2801 PRIMARY | Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace (USA) |
| 10-847 | The Boeing Company Div Legacy Wichita (USA) |
| 116B100-1 PRIMARY | Meggitt Troy Inc (USA) |
NSN 4820-00-529-4177 is a Valve,safety Relief, manufactured by Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-529-4177 has 3 cross-referenced part numbers: MC1603-2801 (Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace), 10-847 (The Boeing Company Div Legacy Wichita), 116B100-1 (Meggitt Troy Inc).
There are 5 known substitutes for 4820-00-529-4177: 6685-00-022-7992, 5950-00-387-2440, 4820-00-654-7072 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for MC1603-2801: Surface Treatment: ANODIZE LOCATION NOT OTHERWISE SPECIFIED; Style Designator: STRAIGHT THRU W/BAFFLE; Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Seat Angle: 37.0 DEGREES FIRST END. 21 total characteristics are documented in the Federal Logistics Information System.