PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4049Hose Assembly,air Duct

Flexaust Inc · NSN 4720-00-829-4132 · FSC 4720 · No Item Name Available
Verified by PartsTable
NSN 4720-00-829-4132 — this item is cataloged by the U.S. Government under National Stock Number 4720-00-829-4132. Primary manufacturer part number: 4049.
Features
  • Hose Assembly,air Duct — FSC 4720
  • End Inside Diameter: 5.000 INCHES NOMINAL FIRST END IN
  • Connection Type: SOFT BOTH ENDS
  • Inside Diameter: 4.000 INCHES NOMINAL FIRST END IN
  • End Overall Length: 1.000 INCHES NOMINAL BOTH ENDS IN
  • End Inside Diameter: 4.000 INCHES NOMINAL SECOND END IN
  • Material: RUBBER CHLOROPRENE CLASS CR FIRST PLY
  • Measuring Method and Length: 144.000 INCHES NOMINAL OVERALL IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Rubber Chloroprene Class Cr First Ply construction
General Description

The Hose Assembly,air Duct, cataloged under National Stock Number 4720-00-829-4132, 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 Flexaust Inc. Government technical data includes 14 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4720-00-829-4132
Primary Part Number4049
Item NameHose Assembly,air Duct
FSC / FSG4720 / 47 — No Item Name Available
ManufacturerFlexaust Inc
StatusACTIVE
End Inside Diameter5.000 INCHES NOMINAL FIRST END IN
Connection TypeSOFT BOTH ENDS
Inside Diameter4.000 INCHES NOMINAL FIRST END IN
End Overall Length1.000 INCHES NOMINAL BOTH ENDS IN
End Inside Diameter4.000 INCHES NOMINAL SECOND END IN
MaterialRUBBER CHLOROPRENE CLASS CR FIRST PLY
Measuring Method and Length144.000 INCHES NOMINAL OVERALL IN
Style DesignatorHELICALLY WOUND CONTINOUS WIRE SUPPORTED
Connection StyleROUND SECOND END
MaterialRUBBER CHLOROPRENE CLASS CR SECOND PLY
MaterialCOTTON REINFORCING CORD
Connection StyleROUND FIRST END
Cross-Sectional Shape StyleROUND
Wall Thickness0.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
6645-00-225-26664049 INTERCHANGEABLE
Roller
Wakmann Watch Company Inc
5950-00-461-83054049 INTERCHANGEABLE
Transformer,power
Sartron, Inc
5999-00-468-32414049 INTERCHANGEABLE
Contact,electrical
Dynalec Corporation
6110-00-519-2369AN16KN0A INTERCHANGEABLE
Starter,motor
Eaton Corporation
5305-00-721-45894049 INTERCHANGEABLE
Thumbscrew
Roller Bearing Co of America, Inc Div Pic Design
4710-00-771-7461377076 INTERCHANGEABLE
Tube Assembly,metal
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
5962-01-022-6717 INTERCHANGEABLE
Microcircuit,digital
5305-01-147-67194049-M07-F09 INTERCHANGEABLE
Screw,externally Relieved Body
Unicorp.
5330-01-265-0619 INTERCHANGEABLE
Tape,cloth,metal Seam Sealing
6240-01-267-9865 INTERCHANGEABLE
Lamp,incandescent
Cross-Reference Index
Part NumberManufacturer
4049 PRIMARY Flexaust Inc (USA)
377076 Joy Global Underground Mining Llc (USA)
4049 Dura-Vent Corp (USA)
Related Parts
6645-00-225-2666INTERCHANGEABLE
ROLLER
4049
5950-00-461-8305INTERCHANGEABLE
TRANSFORMER,POWER
4049
5999-00-468-3241INTERCHANGEABLE
CONTACT,ELECTRICAL
4049
6110-00-519-2369INTERCHANGEABLE
STARTER,MOTOR
AN16KN0A
5305-00-721-4589INTERCHANGEABLE
THUMBSCREW
4049
4710-00-771-7461INTERCHANGEABLE
TUBE ASSEMBLY,METAL
377076
5962-01-022-6717INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
5305-01-147-6719INTERCHANGEABLE
SCREW,EXTERNALLY RELIEVED BODY
4049-M07-F09
5330-01-265-0619INTERCHANGEABLE
TAPE,CLOTH,METAL SEAM SEALING
6240-01-267-9865INTERCHANGEABLE
LAMP,INCANDESCENT

Frequently Asked Questions

What is NSN 4720-00-829-4132?

NSN 4720-00-829-4132 is a Hose Assembly,air Duct, manufactured by Flexaust Inc, classified under FSC 4720 (No Item Name Available). Status: active.

What are the part numbers for NSN 4720-00-829-4132?

NSN 4720-00-829-4132 has 3 cross-referenced part numbers: 4049 (Flexaust Inc), 377076 (Joy Global Underground Mining Llc), 4049 (Dura-Vent Corp).

What NSN replaces 4720-00-829-4132?

There are 10 known substitutes for 4720-00-829-4132: 6645-00-225-2666, 5950-00-461-8305, 5999-00-468-3241 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4049?

Key specifications for 4049: End Inside Diameter: 5.000 INCHES NOMINAL FIRST END IN; Connection Type: SOFT BOTH ENDS; Inside Diameter: 4.000 INCHES NOMINAL FIRST END IN; End Overall Length: 1.000 INCHES NOMINAL BOTH ENDS IN. 15 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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