Measuring Method and Length: 240.000 INCHES NOMINAL OVERALL IN
Connection Style: ROUND BOTH ENDS
Connection Type: PREFORMED BOTH ENDS
Style Designator: SLEEVE SECTION
Cross-Sectional Shape Style: ROUND
Wall Thickness: 0.025 INCHES NOMINAL IN
Inside Diameter: 3.500 INCHES NOMINAL FIRST END IN
Identification
NSN: 4720-01-435-9506
NIIN: 014359506
FSC: 4720 — Hose and Flexible Tubing
FSG: 47 — Pipe, Tubing, Hose, and Fittings
General Description
The Hose,air Duct, cataloged under National Stock Number 4720-01-435-9506, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4720-01-435-9506
Item Name
Hose,air Duct
FSC / FSG
4720 / 47 — Hose and Flexible Tubing
Status
ACTIVE
Measuring Method and Length
240.000 INCHES NOMINAL OVERALL IN
Connection Style
ROUND BOTH ENDS
Connection Type
PREFORMED BOTH ENDS
Style Designator
SLEEVE SECTION
Cross-Sectional Shape Style
ROUND
Wall Thickness
0.025 INCHES NOMINAL IN
Inside Diameter
3.500 INCHES NOMINAL FIRST END IN
End Overall Length
5.000 INCHES NOMINAL BOTH ENDS IN
End Inside Diameter
3.500 INCHES NOMINAL BOTH ENDS IN
Material
RUBBER SILICONE CLASS Q FIRST PLY
Material
COTTON SECOND PLY
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
M22706-DS-20
4/1Identification reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 4720 — Hose and Flexible Tubing
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4720-00-000-0080
HOSE ASSEMBLY,NONMETALLIC
4720-00-000-0081
4720-00-000-0081 · Item name not on file
4720-00-000-0084
HOSE,PREFORMED
4720-00-000-0724
4720-00-000-0724 · Item name not on file
4720-00-001-0014
HOSE ASSEMBLY,NONMETALLIC
4720-00-001-0015
4720-00-001-0015 · Item name not on file
4720-00-001-0023
HOSE ASSEMBLY,NONMETALLIC
4720-00-001-0025
4720-00-001-0025 · Item name not on file
Frequently Asked Questions
What is NSN 4720-01-435-9506?
NSN 4720-01-435-9506 is a Hose,air Duct, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
What are the specifications of 4720-01-435-9506?
Key specifications for 4720-01-435-9506: Measuring Method and Length: 240.000 INCHES NOMINAL OVERALL IN; Connection Style: ROUND BOTH ENDS; Connection Type: PREFORMED BOTH ENDS; Style Designator: SLEEVE SECTION. 11 specifications are documented in the U.S. Government catalog.
Is NSN 4720-01-435-9506 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.