The Valve,restrictor Check, cataloged under National Stock Number 4820-00-541-5861, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Crissair Inc Div Esco Technologies. Government technical data includes 13 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 | 4820-00-541-5861 |
| Primary Part Number | 6F1010-020 |
| Item Name | Valve,restrictor Check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Crissair Inc Div Esco Technologies |
| Status | ACTIVE |
| Material | ALUMINUM ALLOY 2024 BODY |
| Nominal Thread Size | 0.438 INCHES ALL ENDS IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Connection Type | THREADED EXTERNAL BOSS ALL ENDS |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS |
| Maximum Operating Temp | 275.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Flow Control Device | POPPET |
| Thread Class | 3A ALL ENDS A |
| Mounting Position | HORIZONTAL |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 6F1010-020 | Safran Aerosystems Ex Safran Aerotechnics Plaisir (FRA) |
| 6F1010-020 PRIMARY | Crissair Inc Div Esco Technologies (USA) |
| 50098 | Mission Systems Davenport Inc. (USA) |
NSN 4820-00-541-5861 is a Valve,restrictor Check, manufactured by Crissair Inc Div Esco Technologies, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-541-5861 has 3 cross-referenced part numbers: 6F1010-020 (Safran Aerosystems Ex Safran Aerotechnics Plaisir), 6F1010-020 (Crissair Inc Div Esco Technologies), 50098 (Mission Systems Davenport Inc.).
There are 5 known substitutes for 4820-00-541-5861: 5330-00-286-6829, 5310-00-481-6481, 2805-00-554-1005 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 6F1010-020: Material: ALUMINUM ALLOY 2024 BODY; Nominal Thread Size: 0.438 INCHES ALL ENDS IN; Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS. 13 total characteristics are documented in the Federal Logistics Information System.