PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5186-4Hose,air Duct

Flexco, Inc · NSN 4720-00-411-3865 · FSC 4720 · No Item Name Available
Verified by PartsTable
NSN 4720-00-411-3865 — this item is cataloged by the U.S. Government under National Stock Number 4720-00-411-3865. Primary manufacturer part number: 5186-4.
Features
  • Hose,air Duct — FSC 4720
  • Inside Diameter: 1.250 INCHES NOMINAL FIRST END IN
  • Connection Type: PREFORMED FIRST END
  • Features Provided: OZONE RESISTANT
  • End Overall Length: 2.000 INCHES NOMINAL FIRST END IN
  • Material: FIBERGLASS AND RUBBER CHLOROPRENE CLASS CR FIRST PLY
  • Material: STEEL AND COPPER ALLOY SECOND PLY
  • Operating Pressure: 8.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Fiberglass and Rubber Chloroprene Class Cr First Ply construction
General Description

The Hose,air Duct, cataloged under National Stock Number 4720-00-411-3865, 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 Flexco, Inc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4720-00-411-3865
Primary Part Number5186-4
Item NameHose,air Duct
FSC / FSG4720 / 47 — No Item Name Available
ManufacturerFlexco, Inc
StatusACTIVE
Inside Diameter1.250 INCHES NOMINAL FIRST END IN
Connection TypePREFORMED FIRST END
Features ProvidedOZONE RESISTANT
End Overall Length2.000 INCHES NOMINAL FIRST END IN
MaterialFIBERGLASS AND RUBBER CHLOROPRENE CLASS CR FIRST PLY
MaterialSTEEL AND COPPER ALLOY SECOND PLY
Operating Pressure8.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
Style DesignatorHELICALLY WOUND CONTINOUS WIRE SUPPORTED
Measuring Method and Length14.000 INCHES NOMINAL OVERALL IN
MaterialFIBERGLASS FOURTH PLY
MaterialFIBERGLASS AND RUBBER CHLOROPRENE CLASS CR THIRD PLY
Cross-Sectional Shape StyleROUND
Connection StyleROUND FIRST END
Hose Weight3.680 OUNCES PER LINEAR FOOT OZ
End Inside Diameter1.250 INCHES NOMINAL FIRST END IN
Wall Thickness0.055 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5940-00-113-8179MS25036-107 INTERCHANGEABLE
Terminal,lug
Sae International Dba Sae International
3120-00-688-852751864 INTERCHANGEABLE
Retainer,bearing
Parker Hannifin Corporation Div Hydraulic Systems Division
4820-01-183-25965-1864 PIECE 19 INTERCHANGEABLE
Disk,valve
Mark Controls Corp Pacific Valves Div
4820-01-192-35225-1864 PIECE 21 6IN INTERCHANGEABLE
Seat,valve
Mark Controls Corp Pacific Valves Div
5340-01-699-360351864 INTERCHANGEABLE
Seat,helical Compression Spring
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
Cross-Reference Index
Part NumberManufacturer
216-55341-4 Triumph Aerostructures, Llc Dba Triumph Aerostructures - Vought Integrated Programs Division (USA)
5186-4 PRIMARY Flexco, Inc (USA)
Related Parts
5940-00-113-8179INTERCHANGEABLE
TERMINAL,LUG
MS25036-107
3120-00-688-8527INTERCHANGEABLE
RETAINER,BEARING
51864
4820-01-183-2596INTERCHANGEABLE
DISK,VALVE
5-1864 PIECE 19
4820-01-192-3522INTERCHANGEABLE
SEAT,VALVE
5-1864 PIECE 21 6IN
5340-01-699-3603INTERCHANGEABLE
SEAT,HELICAL COMPRESSION SPRING
51864

Frequently Asked Questions

What is NSN 4720-00-411-3865?

NSN 4720-00-411-3865 is a Hose,air Duct, manufactured by Flexco, Inc, classified under FSC 4720 (No Item Name Available). Status: active.

What are the part numbers for NSN 4720-00-411-3865?

NSN 4720-00-411-3865 has 2 cross-referenced part numbers: 216-55341-4 (Triumph Aerostructures, Llc Dba Triumph Aerostructures - Vought Integrated Programs Division), 5186-4 (Flexco, Inc).

What NSN replaces 4720-00-411-3865?

There are 5 known substitutes for 4720-00-411-3865: 5940-00-113-8179, 3120-00-688-8527, 4820-01-183-2596 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5186-4?

Key specifications for 5186-4: Inside Diameter: 1.250 INCHES NOMINAL FIRST END IN; Connection Type: PREFORMED FIRST END; Features Provided: OZONE RESISTANT; End Overall Length: 2.000 INCHES NOMINAL FIRST END IN. 16 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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