4520-01-287-3991 HEATER,DUCT TYPE,STATIONARY Index 4820-01-287-3993 VALVE,GATE

National Stock Number:
4730-01-287-3992

Federal Supply Class:
4730

National Item Identification Number:
012873992

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:
AN6289W588044AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE
AS48410U583SAE INTERNATIONAL
AS51790U583SAE INTERNATIONAL
AS5179W050U583SAE INTERNATIONAL
AS484181343SOCIETY OF AUTOMOTIVE ENGINEERS INC
AS517981343SOCIETY OF AUTOMOTIVE ENGINEERS INC
SAE-AS48410U583SAE INTERNATIONAL
AS5179W0581343SOCIETY OF AUTOMOTIVE ENGINEERS INC


Techincal Specification:
PACKING RECESS DEPTH0.042 INCHES NOMINAL
PACKING RECESS DIAMETER0.670 INCHES NOMINAL
MATERIALALUMINUM ALLOY 7075 OVERALL
NOMINAL TUBE OUTSIDE DIAMETER0.312 INCHES
NOMINAL THREAD SIZE0.500 INCHES
NUT HEIGHT0.281 INCHES NOMINAL
NUT STYLETUBE FITTING LOCKNUT
SPECIFICATION/STANDARD DATA88044-AN6289W5 GOVERNMENT STANDARD
WIDTH ACROSS FLATS0.750 INCHES NOMINAL
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUNJF
THREAD QUANTITY PER INCH20


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