The Valve,calibrated Flow, cataloged under National Stock Number 4820-01-123-7658, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Eaton Aerospace Llc. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-123-7658 |
| Primary Part Number | 11266-1 |
| Item Name | Valve,calibrated Flow |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Eaton Aerospace Llc |
| Status | ACTIVE |
| Second End Relationship with First End | NOT IDENTICAL |
| Thread Size and Series/type Designator | 1.3125-12 UNIFIED NATIONAL COARSE (UNC) MODIFIED SECOND END |
| Second End Style Designator | EXTERNAL SEAT FOR GASKET SEAL |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| Material | RUBBER SYNTHETIC PACKING |
| Material Document and Classification | QQ-S-763, CLASS 302, 303, 304, 305, 310, OR 316 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | QQ-S-763, CLASS 440C FED SPEC SINGLE MATERIAL RESPONSE OR AMS 5643 ASSN STD 1ST MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Body Style | SCREW-IN CARTRIDGE |
| First End Style Designator | FLARELESS |
| First End Outside Diameter Tube Accommodated | 0.500 INCHES NOMINAL IN |
| Media for Which Designed | HYDRAULIC FLUID, PETROLEUM BASE |
| Maximum Inlet Pressure Rating | ERR-060 |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| End Connection Quantity | 2 |
| First End Thread Class | 3A A |
| Thread Size and Series/type Designator | 0.7500-16 UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END |
| First End Thread Direction | RIGHT-HAND |
| First End Seat Angle in Deg | 24.0 |
| Flow Control Device | DISK |
| Material | STEEL COMP 440C OR STEEL COMP 630 BODY |
| Valve Discharge Flow Rate | 5.5 GALLONS PER MINUTE |
| Temp Rating | -50.0 FAHRENHEIT MINIMUM AND 160.0 FAHRENHEIT MAXIMUM DEGF |
| Second End Thread Direction | RIGHT-HAND |
| Second End Connection Type | THREADED EXTERNAL BOSS |
| Second End Thread Class | 3A A |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 11266-1 PRIMARY | Eaton Aerospace Llc (USA) |
| 145HS142-2 | Leonardo Spa Helicopters Division - Production Site (ITA) |
| 428321 | Eaton Aerospace, Llc Dba Jackson South (USA) |
| 145HS142-2 | The Boeing Company (USA) |
| 11266 | Eaton Aerospace Llc (USA) |
NSN 4820-01-123-7658 is a Valve,calibrated Flow, manufactured by Eaton Aerospace Llc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-123-7658 has 5 cross-referenced part numbers: 11266-1 (Eaton Aerospace Llc), 145HS142-2 (Leonardo Spa Helicopters Division - Production Site), 428321 (Eaton Aerospace, Llc Dba Jackson South), 145HS142-2 (The Boeing Company), 11266 (Eaton Aerospace Llc).
There are 12 known substitutes for 4820-01-123-7658: 5999-00-006-7355, 4220-00-051-3078, 5985-00-412-9603 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 11266-1: Second End Relationship with First End: NOT IDENTICAL; Thread Size and Series/type Designator: 1.3125-12 UNIFIED NATIONAL COARSE (UNC) MODIFIED SECOND END; Second End Style Designator: EXTERNAL SEAT FOR GASKET SEAL; Regulation Type: AUTOMATIC SINGLE STAGE. 27 total characteristics are documented in the Federal Logistics Information System.