NSN 4720-01-221-5351 FLX100185002608, TBD, 11833

Product Details | AIR DUCT HOSE

4720-01-221-5351 A flexible, tubular item of light wall construction. It must have single or multiple layers of nonmetallic material, but may contain metal wire reinforcement, foil type liner, and/or woven or braided cover. It is designed to convey under low pressure gaseous material, such as air and fumes, and light weight solid materials, such as dust, powders, and fibers. For items with couplings, see HOSE ASSEMBLY, AIR DUCT. For items of sleeve section design rated for high pressure use, see SLEEVE, SEAL, COUPLING. Excludes hose, nonmetallic.

Part Alternates: FLX100185002608, TBD, 11833, 118333, 11833-3 , 4720-01-221-5351, 01-221-5351, 4720012215351, 012215351

Pipe, Tubing, Hose, and Fittings | Hose and Flexible Tubing

Supply Group (FSG)	NSN Assign.	NIIN	Item Name Code (INC)
47	29 NOV 1985	01-221-5351	11116 ( HOSE, AIR DUCT )

Drawings & Photos | NSN 4720-01-221-5351

Part Number	Request Date	QTY	Origin
TBD	2025-11-310	1	US
TBD	2025-11-310	1	US
TBD	2025-04-101	6	US
TBD	2020-07-184	10	US
TBD	2018-07-190	2	United States
118333	2012-09-256	1	US
4720-01-221-5351	2009-08-218	1	DIBBS
4720-01-221-5351	2009-06-179	1	DIBBS
TBD	2006-04-117	1	us

Cross Reference | NSN 4720-01-221-5351

Part Number	Cage Code	Manufacturer
11833	5RQL2	DRS ENVIRONMENTAL SYSTEMS, INC. DBA D R S
11833	90598	ENGINEERED AIR SYSTEMS INC. DBA DRS SUSTAINMENT SYSTEMS
11833-3	5RQL2	DRS ENVIRONMENTAL SYSTEMS, INC. DBA D R S
11833-3	90598	ENGINEERED AIR SYSTEMS INC. DBA DRS SUSTAINMENT SYSTEMS
FLX100185002608	16632	FLEXFAB, LLC
TBD	81518	THE FLEXAUST COMPANY INC

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Related Products | NSN 4720-01-221-5351

4720-01-221-5559, 4720-01-221-5561, 4720-01-221-5562, 4720-01-221-5563, 4720-01-221-5564

Technical Data | NSN 4720-01-221-5351

Characteristic	Specifications
MATERIAL	RUBBER SYNTHETIC ALL PLIES
STYLE DESIGNATOR	A5 SLEEVE SECTION
CROSS-SECTIONAL SHAPE STYLE	B3 ROUND
INSIDE DIAMETER	10.620 INCHES NOMINAL FIRST END
MEASURING METHOD AND LENGTH	6.500 INCHES NOMINAL OVERALL
CONNECTION TYPE	PREFORMED BOTH ENDS
CONNECTION STYLE	C3 ROUND BOTH ENDS
END INSIDE DIAMETER	10.620 INCHES NOMINAL BOTH ENDS
END OVERALL LENGTH	2.000 INCHES NOMINAL BOTH ENDS
MAXIMUM OPERATING PRESSURE	4.0 POUNDS PER SQUARE INCH
EXTERNAL OPERATING PRESSURE	0.0 POUNDS PER SQUARE INCH
FEATURES PROVIDED	FUNGUS RESISTANT TREATMENT
SPECIAL FEATURES	AMBIENT OPERATING RANGE: FROM 0 DEG. F TO 140 DEG. F; ALSO,STORED AT: -65 DEG. F TO +160 DEG. F. ENVIRONMENTAL EXPOSURE: 1) THE FLEXIBLE DUCT SHALL BE CAPABLE OF CONFORMING TO ALL REQUIREMENTS SPECIFIED HEREIN AFTER EXPOSURE TO THE FOLLOWING ENVIRONMENTAL CONDITIONS: A) AMBIENT TEMPERATURE OF -65 DEG. F TO +160 DEG. F. B) RADIANT ENERGY AS FOUND UNDER NATURAL CONDITIONS. C) SALT SPRAY AS MAY BE ENCOUNTERED IN SALT-SEA ATMOSPHERE. D) FUNGUS GROWTH AS MAY BE ENCOUNTERED INTROPICAL CLIMATE. E) RAINFALL AS ENCOUNTERED IN ANY LOCATE. F) SAND AND DUSTAS MAY BE ENCOUNTERED IN DESERT AREAS.
III END ITEM IDENTIFICATION	4120-01-154-9127( TYPE MA-3,MODEL MAD-3D ). T.O.35E9-9-64 F.6 I.83
(NON-CORE DATA) TEMP RANGE	-50.0 TO 200.0 DEG FAHRENHEIT

Restrictions/Controls & Freight Information | NSN 4720-01-221-5351

Restrictions
Freight

Category	Code	Description
Shelf-Life Code:	0	Nondeteriorative
Hazardous Material Indicator Code	N	There is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:	A	Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:	U	UNCLASSIFIED
Precious Metals Indicator Code:	A	Item does not contain precious metal
Criticality Code:	X	The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Category	Code	Description
NMF Description	051035	DUCTS:AIR SYSTEM
Less than car load rating
Less than truck load rating	W	Rating Variable
Water commodity Code	772	unknown
Originating Activity Code	SE	San Antonio Air Logistics Center Kelly AFB, TX 78241-5000
Air Dimension Code	A	Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity	B	Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
Air Special Handling	Z	No special handling required.
Special Handling Code	9	unknonwn
HAZMAT
Type of Cargo	Z	No special type of cargo code applicable

Management | NSN 4720-01-221-5351

Air Force

Category	Code	Description
Budget Code	9	General Support DIV57X4921.070:Air Force decentrally managed expense items (ERRC XB3, XF-3) with a unit cost of less than $250,000 that are requisitioned/procured at base (retail) level from DLA, GSA, Army, Navy, Depot Maintenance Service, Air Force Industrial Fund (AFMC), local manufacture and commercial vendors.
Price Validation	N	The current standard price in Catalog Management Data (CMD) has not analyzed or coded for LP/LM. The price has not been analyzed or reviewed for accuracy. ZOP or Standard price challenges are permissible, but must be supported with adequate justification. However, if coded for Local Purchase (LP) or Fabrication/Manufacture as indicated with an (LM) Acquisition Advice Code of ?L? or?F?,the case must be evaluated locally where purchased or fabricated.
Fund Code	SF	Stock fund applicable to items managed for the Air Force by the respective Inventory Control Point.
Materiel Management Aggregation Code	SX	SX:AF SICA RESIDUAL MMAC-OC-ALC
Source of Supply	SMS	Defense Logistics Agency Enterprise Business Systems
Agency	DF	Department of the Air Force
Service Organization	F	U.S. Air Force
Reparability	N	Stock Fund (except Munitions)
Acquisition Advice Codes	J	NOT STOCKED, CENTRALLY PROCURED # (NON-STOCKED ITEMS) IMM/Service centrally managed but not stocked item. Procurement will be initiated only after receipt of a requisition.
Controlled Item Code	U	UNCLASSIFIED
Shelf Life Code	0	Nondeteriorative
Purchasing	QTY UOM	1 EA : Each