PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

43766Coupling Assembly,tube,flexible

Hyspan Precision Products, Inc. Dba Hyspan Precision Products Inc · NSN 4730-01-352-1939 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-352-1939 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-352-1939. Primary manufacturer part number: 43766.
Features
  • Coupling Assembly,tube,flexible — FSC 4730
  • Working Pressure and Service Type: 12.0 POUNDS PER SQUARE INCH (PSI) NOMINAL AIR LBS
  • Tube Outside Diameter for Which Designed: 40.000 INCHES NOMINAL IN
  • Outside Diameter: 46.000 INCHES NOMINAL IN
  • Material: STEEL
  • Style Designator: FLEXIBLE COUPLING ASSEMBLY
  • Working Temp and Service Type: 1000.0 DEG FAHRENHEIT NOMINAL AIR
  • 5 verified cross-references
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel construction
General Description

The Coupling Assembly,tube,flexible, cataloged under National Stock Number 4730-01-352-1939, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Hyspan Precision Products, Inc. Dba Hyspan Precision Products Inc. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-352-1939
Primary Part Number43766
Item NameCoupling Assembly,tube,flexible
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerHyspan Precision Products, Inc. Dba Hyspan Precision Products Inc
StatusACTIVE
Working Pressure and Service Type12.0 POUNDS PER SQUARE INCH (PSI) NOMINAL AIR LBS
Tube Outside Diameter for Which Designed40.000 INCHES NOMINAL IN
Outside Diameter46.000 INCHES NOMINAL IN
MaterialSTEEL
Style DesignatorFLEXIBLE COUPLING ASSEMBLY
Working Temp and Service Type1000.0 DEG FAHRENHEIT NOMINAL AIR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
6240-00-044-42794535 INTERCHANGEABLE
Lamp,incandescent
American National Standards Institute Incorporated Dba American National Standards Institute
3895-00-161-1417 INTERCHANGEABLE
Brake Band Assy
5930-00-188-10263953 INTERCHANGEABLE
Switch,toggle
Bryant Electric
6615-00-235-748843766 INTERCHANGEABLE
Ring,brush Adjusting
Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems
5340-00-468-0840490722PC37 INTERCHANGEABLE
Seat,helical Compression Spring
Naval Sea Systems Command
5360-01-022-07866446 INTERCHANGEABLE
Spring,helical,compression
Tescom Corp Dba Tescom Div Tescom
4310-01-283-49906446 INTERCHANGEABLE
Ring,piston
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
6685-01-386-65473905-G503 INTERCHANGEABLE
Sensor,humidity
Howell Laboratories Inc Dba Howell Laboratories Inc
4440-01-388-33566446-G501 INTERCHANGEABLE
Drier,air-Gas,desiccant
Howell Laboratories Inc Dba Howell Laboratories Inc
6515-01-561-0899AS10S INTERCHANGEABLE
Holder,drill Bit,surgical
Medtronic Powered Surgical Solutions Dba Medtronic Mitas Rex
Cross-Reference Index
Part NumberManufacturer
6446 Naval Ship Engineering Center Philadelphia Div (USA)
43766 REV B Hyspan Precision Products, Inc. Dba Hyspan Precision Products Inc (USA)
43766 PRIMARY Hyspan Precision Products, Inc. Dba Hyspan Precision Products Inc (USA)
2509SP-43766 Hyspan Precision Products, Inc. (USA)
43766 Hyspan Precision Products, Inc. (USA)
Related Parts
6240-00-044-4279INTERCHANGEABLE
LAMP,INCANDESCENT
4535
3895-00-161-1417INTERCHANGEABLE
BRAKE BAND ASSY
5930-00-188-1026INTERCHANGEABLE
SWITCH,TOGGLE
3953
6615-00-235-7488INTERCHANGEABLE
RING,BRUSH ADJUSTING
43766
5340-00-468-0840INTERCHANGEABLE
SEAT,HELICAL COMPRESSION SPRING
490722PC37
5360-01-022-0786INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
6446
4310-01-283-4990INTERCHANGEABLE
RING,PISTON
6446
6685-01-386-6547INTERCHANGEABLE
SENSOR,HUMIDITY
3905-G503
4440-01-388-3356INTERCHANGEABLE
DRIER,AIR-GAS,DESICCANT
6446-G501
6515-01-561-0899INTERCHANGEABLE
HOLDER,DRILL BIT,SURGICAL
AS10S

Frequently Asked Questions

What is NSN 4730-01-352-1939?

NSN 4730-01-352-1939 is a Coupling Assembly,tube,flexible, manufactured by Hyspan Precision Products, Inc. Dba Hyspan Precision Products Inc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-352-1939?

NSN 4730-01-352-1939 has 5 cross-referenced part numbers: 6446 (Naval Ship Engineering Center Philadelphia Div), 43766 REV B (Hyspan Precision Products, Inc. Dba Hyspan Precision Products Inc), 43766 (Hyspan Precision Products, Inc. Dba Hyspan Precision Products Inc), 2509SP-43766 (Hyspan Precision Products, Inc.), 43766 (Hyspan Precision Products, Inc.).

What NSN replaces 4730-01-352-1939?

There are 10 known substitutes for 4730-01-352-1939: 6240-00-044-4279, 3895-00-161-1417, 5930-00-188-1026 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 43766?

Key specifications for 43766: Working Pressure and Service Type: 12.0 POUNDS PER SQUARE INCH (PSI) NOMINAL AIR LBS; Tube Outside Diameter for Which Designed: 40.000 INCHES NOMINAL IN; End Item Identification: FOR TURBINE EXHAUST; Outside Diameter: 46.000 INCHES NOMINAL IN. 8 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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