PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FLX1001-0018Hose,air Duct

Flexfab Llc · NSN 4720-01-231-2646 · FSC 4720 · No Item Name Available
Verified by PartsTable
NSN 4720-01-231-2646 — this item is cataloged by the U.S. Government under National Stock Number 4720-01-231-2646. Primary manufacturer part number: FLX1001-0018.
Features
  • Hose,air Duct — FSC 4720
  • Connection Style: ROUND BOTH ENDS
  • End Overall Length: 1.000 INCHES NOMINAL BOTH ENDS IN
  • Inside Diameter: 4.500 INCHES NOMINAL FIRST END IN
  • Features Provided: FUNGUS RESISTANT TREATMENT
  • End Inside Diameter: 4.500 INCHES NOMINAL BOTH ENDS IN
  • Material: RUBBER SYNTHETIC ALL PLIES
  • Operating Pressure: 4.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Rubber Synthetic All Plies construction
General Description

The Hose,air Duct, cataloged under National Stock Number 4720-01-231-2646, is classified within Federal Supply Class 4720 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Flexfab Llc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4720-01-231-2646
Primary Part NumberFLX1001-0018
Item NameHose,air Duct
FSC / FSG4720 / 47 — No Item Name Available
ManufacturerFlexfab Llc
StatusACTIVE
Connection StyleROUND BOTH ENDS
End Overall Length1.000 INCHES NOMINAL BOTH ENDS IN
Inside Diameter4.500 INCHES NOMINAL FIRST END IN
Features ProvidedFUNGUS RESISTANT TREATMENT
End Inside Diameter4.500 INCHES NOMINAL BOTH ENDS IN
MaterialRUBBER SYNTHETIC ALL PLIES
Operating Pressure4.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
Style DesignatorFULLY CONVOLUTED
Measuring Method and Length4.120 INCHES NOMINAL OVERALL IN
Cross-Sectional Shape StyleROUND
Connection TypePREFORMED BOTH ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
4730-00-022-24571183-3 INTERCHANGEABLE
Coupling Half,quick Disconnect
Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
6105-00-252-901611833-1 INTERCHANGEABLE
Rotor,motor
Hamilton Sundstrand Corporation
5330-00-255-03495245645 INTERCHANGEABLE
Gasket
U S Army Tank Automotive Command Amsta-Im-Mm
5360-00-312-6069 INTERCHANGEABLE
Spring,helical,extension
2540-00-371-612311833 INTERCHANGEABLE
Gear Assembly,maste
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
5307-00-616-601611833A INTERCHANGEABLE
Stud,plain
Brinkley Technology Group Llc Dba Hercules Manufacturing
5935-00-751-9509118-33-1 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Kearfott Corporation Div Guidance and Navigation Division
4520-01-025-385211833 INTERCHANGEABLE
Heating Element,electrical,nonim
Electro Impulse Laboratory Inc Dba Electro Impulse Inc
4720-01-221-5351FLX100185002608 INTERCHANGEABLE
Hose,air Duct
Flexfab Llc
4720-01-357-4514FLX100185001804 INTERCHANGEABLE
Hose,air Duct
Flexfab Llc
Cross-Reference Index
Part NumberManufacturer
11833-1 Engineered Air Systems, Inc. Dba Drs Sustainment Systems (USA)
11833-1 Drs Environmental Systems Inc (USA)
FLX1001-0018 PRIMARY Flexfab Llc (USA)
11833 Engineered Air Systems, Inc. Dba Drs Sustainment Systems (USA)
Related Parts
4730-00-022-2457INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
1183-3
6105-00-252-9016INTERCHANGEABLE
ROTOR,MOTOR
11833-1
5330-00-255-0349INTERCHANGEABLE
GASKET
5245645
5360-00-312-6069INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
2540-00-371-6123INTERCHANGEABLE
GEAR ASSEMBLY,MASTE
11833
5307-00-616-6016INTERCHANGEABLE
STUD,PLAIN
11833A
5935-00-751-9509INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
118-33-1
4520-01-025-3852INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
11833
4720-01-221-5351INTERCHANGEABLE
HOSE,AIR DUCT
FLX100185002608
4720-01-357-4514INTERCHANGEABLE
HOSE,AIR DUCT
FLX100185001804
5306-01-550-5745INTERCHANGEABLE
BOLT,MACHINE
118331

Frequently Asked Questions

What is NSN 4720-01-231-2646?

NSN 4720-01-231-2646 is a Hose,air Duct, manufactured by Flexfab Llc, classified under FSC 4720 (No Item Name Available). Status: active.

What are the part numbers for NSN 4720-01-231-2646?

NSN 4720-01-231-2646 has 4 cross-referenced part numbers: 11833-1 (Engineered Air Systems, Inc. Dba Drs Sustainment Systems), 11833-1 (Drs Environmental Systems Inc), FLX1001-0018 (Flexfab Llc), 11833 (Engineered Air Systems, Inc. Dba Drs Sustainment Systems).

What NSN replaces 4720-01-231-2646?

There are 11 known substitutes for 4720-01-231-2646: 4730-00-022-2457, 6105-00-252-9016, 5330-00-255-0349 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FLX1001-0018?

Key specifications for FLX1001-0018: Connection Style: ROUND BOTH ENDS; End Overall Length: 1.000 INCHES NOMINAL BOTH ENDS IN; Inside Diameter: 4.500 INCHES NOMINAL FIRST END IN; Features Provided: FUNGUS RESISTANT TREATMENT. 12 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com