NSN 4720-00-974-1690, 4720009741690
Cancelled -> Replaced by 4720006474263

Federal Supply Classification: FSC 4720 - Hose and Flexible Tubing
National Item Identification Number: NIIN 009741690
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 4720-00-974-1690

National Stock Number (NSN) 4720-00-974-1690, or NIIN 009741690, (hose assembly,nonmetallic) was assigned September 30, 1966 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 4720006474263.

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 one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are 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 somewhat common among different platforms, belonging to 9 different weapons systems.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 02, 2005, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.

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 4720009741690 does not contain precious metals.

This NSN is associated to Schedule B 4009320050: tubes, pipes and hoses of vulcanized rubber, exc hard rubber, reinforced or otherwise combined only w/ textile materials, w/ fittings, exc brake hoses. The Schedule B End Use is listed as industrial rubber products. NAICS classification category 326220: rubber and plastics hoses and belting manufacturing.

This information was last updated on Jul 01, 2025.

Technical Characteristics

HOSE OR TUBING SPEC/STD DATA: (ADLF) MIL-DTL-26521,SIZE 4 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
UNABLE TO DECODE: (CRBL) UNABLE TO DECODE
END CONNECTION DESIGN: (AKUU) STRAIGHT 1ST END
END CONNECTION DESIGN: (AKUU) STRAIGHT 2ND END
BURST TEST PRESSURE: (CQBD) 900.0 POUNDS PER SQUARE INCH
CONNECTION TYPE: (AWLS) EXTERNAL QUICK DISCONNECT 2ND END
CONNECTION TYPE: (AWLS) THREADED EXTERNAL PIPE 1ST END
CROSS-SECTIONAL SHAPE STYLE: (AAGR) ROUND
HYDROSTATIC TEST PRESSURE: (CRDW) 340.0 POUNDS PER SQUARE INCH
INSIDE DIAMETER: (AARX) 4.000 INCHES NOMINAL
INSIDE SURFACE CONDITION: (CRWL) SMOOTH
LAYER COMPOSITION AND LOCATION: (CQCS) 1ST LAYER BRAIDED SYNTHETIC CORD AND 2ND LAYER BRAIDED SYNTHETIC CORD AND OUTER LAYER MOLDED RUBBER, CHLOROPRENE
OUTSIDE DIAMETER: (ABKV) 4.625 INCHES NOMINAL
MAXIMUM OPERATING PRESSURE: (CQGM) 225.0 POUNDS PER SQUARE INCH
MEASURING METHOD AND LENGTH: (CRXX) 297.000 INCHES MINIMUM OVERALL AND 303.000 INCHES MAXIMUM OVERALL
MEDIA FOR WHICH DESIGNED: (MEDA) FUEL/OIL, HYDROCARBON SINGLE RESPONSE
OUTER COVERING ENVIRONMENTAL PROTECTION: (CRJM) FUEL RESISTANT AND OZONE RESISTANT
SPECIAL FEATURES: (FEAT) FURNISHED WITH A ONE TIME PROTECTIVE SHIPPING CAP FOR EACH END
TEMP RATING: (ABJH) -40.0 FAHRENHEIT SINGLE RESPONSE
TEMP RATING: (ABJH) -40.0 DEG FAHRENHEIT SINGLE RESPONSE
LAYER COMPOSITION AND LOCATION: (CQCS) 2ND LAYER BRAIDED SYNTHETIC CORD ERR-100
SECOND END SWIVEL ACTION CAPABILITY: (CRZY) NOT INCLUDED
FIRST END SWIVEL ACTION CAPABILITY: (CQBG) NOT INCLUDED
LAYER COMPOSITION AND LOCATION: (CQCS) OUTER LAYER MOLDED RUBBER, CHLOROPRENE ERR-100
FIRST END FITTING SPEC/STD DATA: (ADLG) API1529 AMERICAN PETROLEUM INSTITUDE STANDARD STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
SECOND END FITTING SPEC/STD DATA: (ADLH) MIL MS27021-17 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
SECOND END RELATIONSHIP WITH FIRST END: (CQBB) IDENTICAL
UNABLE TO DECODE: (ADJM) UNABLE TO DECODE
UNABLE TO DECODE: (CQGH) UNABLE TO DECODE