NSN 4730-01-633-0839, 4730016330839
ELBOW,TUBE

Federal Supply Classification: FSC 4730 - Hose, Pipe, Tube, Lubrication, and Railing Fittings
National Item Identification Number: NIIN 016330839
Codification Country: United States
Item Name Code: INC 03771
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.

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DLMS^® Summary

National Stock Number 4730-01-633-0839

National Stock Number (NSN) 4730-01-633-0839, or NIIN 016330839, (elbow,tube) was assigned November 6, 2014 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 2 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 5 suppliers. Today, 5 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 4 suppliers are 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 unique to one weapons system.

There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Nov 07, 2014, 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) 03771. [A FITTING THAT FORMS AN ANGLE OF LESS THAN 180 DEGREES (3.141 RADIANS) FROM A STRAIGHT FLOW. BOTH CONNECTING ENDS HAVE MACHINE THREADS (STRAIGHT THREADS OTHER THAN PIPE OR HOSE SERIES) DESIGNED TO ACCOMMODATE A TUBE OR IS UNTHREADED AND DESIGNED TO ACCOMMODATE A TUBE. IT MAY HAVE SIDE OR HEEL INLET(S). SEE ALSO ELBOW, PIPE AND CONNECTOR, MULTIPLE, FLUID PRESSURE LINE.]. 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 4730016330839 does not contain precious metals.

This information was last updated on Jul 01, 2025.

Technical Characteristics

NOMINAL THREAD SIZE: (CQJX) 0.4375 INCHES ALL ENDS
SURFACE TREATMENT: (SFTT) PHOSPHATE FLUORIDE OVERALL
THREAD SERIES DESIGNATOR: (THSD) UNJF ALL ENDS
THREAD PITCH DIAMETERS: (AAJE) +0.437 TO 0.438 INCHES ALL ENDS
THREAD CLASS: (AAJD) 3A ALL ENDS
CONNECTION TYPE: (AWLS) THREADED EXTERNAL TUBE 2ND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: (CWFD) 0.250 INCHES ALL ENDS
END ITEM IDENTIFICATION: (AGAV) F-35
CONNECTION STYLE: (AHNC) UNABLE TO DECODE
CONNECTION TYPE: (AWLS) UNABLE TO DECODE
FLOW ANGLE: (CRFY) 45.0 DEGREES
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) UNABLE TO DECODE
MATERIAL: (MATT) UNABLE TO DECODE
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: (CWFD) UNABLE TO DECODE
NOMINAL THREAD SIZE: (CQJX) UNABLE TO DECODE
SEAT ANGLE: (CQRB) UNABLE TO DECODE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: (STDC) UNABLE TO DECODE
SURFACE TREATMENT: (SFTT) UNABLE TO DECODE
THREAD CLASS: (AAJD) UNABLE TO DECODE
THREAD QUANTITY PER INCH: (CMLP) UNABLE TO DECODE
THREAD SERIES DESIGNATOR: (THSD) UNABLE TO DECODE
THREAD PITCH DIAMETERS: (AAJE) UNABLE TO DECODE
THREAD QUANTITY PER INCH: (CMLP) 20 ALL ENDS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: (STDC) AMS2486 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLE: (AHNC) SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END 1ST END
MATERIAL: (MATT) TITANIUM ALLOY UNS R56400 OVERALL
CONNECTION STYLE: (AHNC) FLARED (TUBE) 2ND END
CONNECTION TYPE: (AWLS) THREADED INTERNAL TUBE 1ST END
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) AMS4928 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SEAT ANGLE: (CQRB) 37.0 DEGREES ALL ENDS