NSN 4720-00-371-6881, 4720003716881
HOSE ASSEMBLY,NONMETALLIC

Federal Supply Classification: FSC 4720 - Hose and Flexible Tubing
National Item Identification Number: NIIN 003716881
Codification Country: United States
Item Name Code: INC 20311
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 4720-00-371-6881

National Stock Number (NSN) 4720-00-371-6881, or NIIN 003716881, (hose assembly,nonmetallic) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 3 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years.

This NSN is assigned to Item Name Code (INC) 20311. [A LENGTH OF NONMETALLIC HOSE WITH FITTINGS ON ONE OR BOTH ENDS. FOR ITEMS WITHOUT FITTINGS, SEE HOSE, NONMETALLIC. EXCLUDES HOSE ASSEMBLY, AIR DUCT; AND HOSE ASSEMBLY, AIR DUCT, AIR BREATHING.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4720003716881 does not contain precious metals.

This information was last updated on Aug 01, 2025.

Technical Characteristics

END CONNECTION DESIGN: (AKUU) STRAIGHT FIRST END
END CONNECTION DESIGN: (AKUU) STRAIGHT SECOND END
CONNECTION TYPE: (AWLS) THREADED EXTERNAL TUBE SECOND END
CONNECTION TYPE: (AWLS) THREADED INTERNAL TUBE FIRST END
CONNECTION STYLE: (AHNC) INVERTED FLARE SECOND END
CONNECTION STYLE: (AHNC) SWIVEL NUT, INVERTED FLARE FIRST END
CROSS-SECTIONAL SHAPE STYLE: (AAGR) ROUND
FSC APPLICATION DATA: (ZZZV) FUEL LINES,FABRICATED,ENGINE,EXCEPT AIRCRAFT AND GUIDED MISSILE PRIME MOVING TYPES
INSIDE DIAMETER: (AARX) 0.250 INCHES NOMINAL
INSIDE SURFACE CONDITION: (CRWL) SMOOTH
LAYER COMPOSITION AND LOCATION: (CQCS) OUTER LAYER MOLDED RUBBER, CHLOROPRENE AND 1ST LAYER BRAIDED RAYON CORD
MEASURING METHOD AND LENGTH: (CRXX) 28.875 INCHES MINIMUM OVERALL AND 29.125 INCHES MAXIMUM OVERALL
NOMINAL THREAD SIZE: (CQJX) 0.625 INCHES FIRST END
NOMINAL THREAD SIZE: (CQJX) 0.625 INCHES SECOND END
SEAT ANGLE: (CQRB) 45.0 DEGREES FIRST END
SEAT ANGLE: (CQRB) 45.0 DEGREES SECOND END
THREAD CLASS: (AAJD) 1A SECOND END
THREAD CLASS: (AAJD) 2B FIRST END
THREAD DIRECTION: (AAJF) RIGHT-HAND FIRST END
THREAD DIRECTION: (AAJF) RIGHT-HAND SECOND END
THREAD SERIES DESIGNATOR: (THSD) UNEF FIRST END
THREAD SERIES DESIGNATOR: (THSD) UNEF SECOND END
THREAD QUANTITY PER INCH: (CMLP) 24 FIRST END
THREAD QUANTITY PER INCH: (CMLP) 24 SECOND END
THREAD SERIES DESIGNATOR: (THSD) UNEF 1ST END
END CONNECTION DESIGN: (AKUU) STRAIGHT 1ST END
LAYER COMPOSITION AND LOCATION: (CQCS) 1ST LAYER BRAIDED RAYON CORD ERR-100
SEAT ANGLE: (CQRB) 45.0 DEGREES 1ST END
SECOND END SWIVEL ACTION CAPABILITY: (CRZY) NOT INCLUDED
THREAD SERIES DESIGNATOR: (THSD) UNEF 2ND END
SECOND END RELATIONSHIP WITH FIRST END: (CQBB) NOT IDENTICAL
THREAD CLASS: (AAJD) UNABLE TO DECODE
UNABLE TO DECODE: (ADJM) UNABLE TO DECODE
SEAT ANGLE: (CQRB) UNABLE TO DECODE
CONNECTION STYLE: (AHNC) INVERTED FLARE 2ND END
END CONNECTION DESIGN: (AKUU) STRAIGHT 2ND END
END CONNECTION DESIGN: (AKUU) UNABLE TO DECODE
FIRST END SWIVEL ACTION CAPABILITY: (CQBG) NOT INCLUDED
THREAD SERIES DESIGNATOR: (THSD) UNABLE TO DECODE
CONNECTION STYLE: (AHNC) UNABLE TO DECODE
THREAD CLASS: (AAJD) 1A 2ND END
THREAD QUANTITY PER INCH: (CMLP) 24 1ST END
UNABLE TO DECODE: (CQGH) UNABLE TO DECODE OR UNABLE TO DECODE
NOMINAL THREAD SIZE: (CQJX) UNABLE TO DECODE
THREAD CLASS: (AAJD) 2B 1ST END
THREAD DIRECTION: (AAJF) RIGHT-HAND 1ST END
THREAD QUANTITY PER INCH: (CMLP) UNABLE TO DECODE
SEAT ANGLE: (CQRB) 45.0 DEGREES 2ND END
CONNECTION TYPE: (AWLS) UNABLE TO DECODE
THREAD QUANTITY PER INCH: (CMLP) 24 2ND END
UNABLE TO DECODE: (CRBL) UNABLE TO DECODE OR UNABLE TO DECODE
THREAD DIRECTION: (AAJF) RIGHT-HAND 2ND END
THREAD DIRECTION: (AAJF) UNABLE TO DECODE
NOMINAL THREAD SIZE: (CQJX) 0.625 INCHES 1ST END
NOMINAL THREAD SIZE: (CQJX) 0.625 INCHES 2ND END