NSN 4720-00-318-0538, 4720003180538
HOSE ASSEMBLY,NONMETALLIC

Federal Supply Classification: FSC 4720 - Hose and Flexible Tubing
National Item Identification Number: NIIN 003180538
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: We have 3 qualified suppliers

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DLMS^® Summary

National Stock Number 4720-00-318-0538

National Stock Number (NSN) 4720-00-318-0538, or NIIN 003180538, (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 6 manufacturer part numbers associated with this NSN. 3 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.

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 4720003180538 contains an unknown precious metal.

This information was last updated on Sep 01, 2026.

Technical Characteristics

UNABLE TO DECODE: (CQGH) UNABLE TO DECODE
THREAD SERIES DESIGNATOR: (THSD) UNABLE TO DECODE
UNABLE TO DECODE: (ADJM) UNABLE TO DECODE
UNABLE TO DECODE: (CQGM) UNABLE TO DECODE
BURST TEST PRESSURE: (CQBD) POUNDS PER SQUARE INCH 20000.0
CONNECTION TYPE: (AWLS) FIRST END THREADED EXTERNAL PIPE
END CONNECTION DESIGN: (AKUU) FIRST END STRAIGHT
HYDROSTATIC TEST PRESSURE: (CRDW) POUNDS PER SQUARE INCH 10000.0
INSIDE DIAMETER: (AARX) INCHES NOMINAL 0.250
INSIDE SURFACE CONDITION: (CRWL) SMOOTH
ITEM STRUCTURAL COMPOSITION: (SCMP) FIRST LAYER BRAIDED STEEL WIRE
ITEM STRUCTURAL COMPOSITION: (SCMP) OUTER LAYER MOLDED RUBBER
ITEM STRUCTURAL COMPOSITION: (SCMP) SECOND LAYER BRAIDED STEEL WIRE
MEASURING METHOD AND LENGTH: (CRXX) INCHES NOMINAL OVERALL 9.500
MINIMUM INSIDE BENDING RADIUS: (ACKH) INCHES 4.000
NOMINAL THREAD SIZE: (CQJX) FIRST END INCHES 0.250
NONDEFINITIVE SPEC/STD DATA: (ZZZT) TYPE 2 AND CLASS A
OPERATING PRESSURE: (CQQF) LOCATION NOT OTHERWISE SPECIFIED POUNDS PER SQUARE INCH (PSI) MAXIMUM 5000.0
OUTER COVERING ENVIRONMENTAL PROTECTION: (CRJM) MILDEW RESISTANT AND OIL RESISTANT
OUTSIDE DIAMETER: (ABKV) INCHES NOMINAL 0.687
TEMP RATING: (ABJH) SINGLE RESPONSE FAHRENHEIT -65.0 AND FAHRENHEIT 250.0
THREAD DIRECTION: (AAJF) FIRST END RIGHT-HAND
THREAD SERIES DESIGNATOR: (THSD) FIRST END NPTF
SPECIFICATION/STANDARD DATA: (ZZZK) GOVERNMENT SPECIFICATION 81349--IL-H-13531
END CONNECTION DESIGN: (AKUU) UNABLE TO DECODE
TEMP RATING: (ABJH) -65.0 DEG FAHRENHEIT AND 250.0 DEG FAHRENHEIT SINGLE RESPONSE
THREAD SERIES DESIGNATOR: (THSD) NPTF 1ST END
THREAD DIRECTION: (AAJF) UNABLE TO DECODE
LAYER COMPOSITION AND LOCATION: (CQCS) 1ST LAYER BRAIDED STEEL WIRE ERR-100
CONNECTION STYLE: (AHNC) UNABLE TO DECODE
MAXIMUM OPERATING PRESSURE: (CQGM) 5000.0 POUNDS PER SQUARE INCH
NOMINAL THREAD SIZE: (CQJX) 0.250 INCHES 1ST END
SECOND END RELATIONSHIP WITH FIRST END: (CQBB) IDENTICAL
LAYER COMPOSITION AND LOCATION: (CQCS) 2ND LAYER BRAIDED STEEL WIRE AND 1ST LAYER BRAIDED STEEL WIRE AND OUTER LAYER MOLDED RUBBER
END CONNECTION DESIGN: (AKUU) STRAIGHT 1ST END
LAYER COMPOSITION AND LOCATION: (CQCS) OUTER LAYER MOLDED RUBBER ERR-100
CONNECTION TYPE: (AWLS) UNABLE TO DECODE
NOMINAL THREAD SIZE: (CQJX) UNABLE TO DECODE
THREAD DIRECTION: (AAJF) RIGHT-HAND 1ST END
CONNECTION STYLE: (AHNC) PLAIN 1ST END
FIRST END SWIVEL ACTION CAPABILITY: (CQBG) NOT INCLUDED