4540-01-143-7987 HEATING ELEMENT,ELECTRICAL,NONIMMERSION TYPE Index 5340-01-143-7989 BRACKET,ANGLE

National Stock Number:
4730-01-143-7988

Federal Supply Class:
4730

National Item Identification Number:
011437988

Description:
LOCKNUT,TUBE FITTING

Detail:
AN ITEM WITH INTERNAL MACHINE THREADS DESIGNED TO FIT THE EXTERNAL MACHINE THREADS OF A TUBE FITTING. IT HAS FLAT FACES, ONE OF WHICH HAS A COUNTERBORED RECESS TO ACCOMMODATE PACKING, PACKING OR SEALING RING(S), GASKET(S), AND THE LIKE. THE ITEM, WHEN INSTALLED, PROVIDES A METHOD OF LOCKING AND SEALING THE CONNECTION. SEE ALSO LOCKNUT, PIPE; NUT (1), TUBE COUPLING AND NUT (1), PLAIN, HEXAGON.


Manufacturer Information:
AN6289W488044AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE
AS48410U583SAE INTERNATIONAL
AS51790U583SAE INTERNATIONAL
AS517981343SOCIETY OF AUTOMOTIVE ENGINEERS INC
AS484181343SOCIETY OF AUTOMOTIVE ENGINEERS INC
AS5179-W4F0553ZODIAC AEROTECHNICS
AS5179W040U583SAE INTERNATIONAL
SAE-AS48410U583SAE INTERNATIONAL
AS5179W0481343SOCIETY OF AUTOMOTIVE ENGINEERS INC
AS5179W481343SOCIETY OF AUTOMOTIVE ENGINEERS INC


Techincal Specification:
PACKING RECESS DEPTH0.042 INCHES NOMINAL
PACKING RECESS DIAMETER0.608 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/9,T73 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY 7075 OVERALL
NOMINAL TUBE OUTSIDE DIAMETER0.250 INCHES
NOMINAL THREAD SIZE0.438 INCHES
NUT HEIGHT0.281 INCHES NOMINAL
NUT STYLETUBE FITTING LOCKNUT
SPECIFICATION/STANDARD DATA88044-AS5179 GOVERNMENT STANDARD
WIDTH ACROSS FLATS0.688 INCHES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE 2,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTANODIZE OVERALL
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUNJF
THREAD QUANTITY PER INCH20


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