4730-00-278-9489 ADAPTER,STRAIGHT,TUBE TO BOSS Index 6685-00-278-9494 CISTERN,UPPER

National Stock Number:
4730-00-278-9491

Federal Supply Class:
4730

National Item Identification Number:
002789491

Description:
ADAPTER,STRAIGHT,TUBE TO BOSS

Detail:
An adapter having machine threads (straight threads other than pipe or hose series) designed to accommodate a tube on one end or an unthreaded end designed to accommodate a tube. The other end has external or internal machine threads (straight threads other than pipe or hose series) and is designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. It is designed to join a tube or tube fitting to a boss or boss fitting in a straight line on items such as tanks, housings, valve fittings, and the like. See also COUPLING, TUBE and NIPPLE, TUBE.


Manufacturer Information:
AN894D20-888044AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE
MIL-F-550981349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
CONNECTION STYLEFLARED (TUBE) FIRST END
CONNECTION STYLEGASKET SEAL (BOSS) SECOND END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPETHREADED INTERNAL BOSS SECOND END
MATERIALALUMINUM ALLOY OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES FIRST END
NOMINAL OVERALL LENGTH2.172 INCHES
NOMINAL THREAD SIZE0.750 INCHES FIRST END
NOMINAL THREAD SIZE1.625 INCHES SECOND END
SEAT ANGLE37.0 DEGREES FIRST END
SURFACE TREATMENTANODIZE INSIDE
SURFACE TREATMENTANODIZE OUTSIDE
THREAD CLASS3A FIRST END
THREAD CLASS3B SECOND END
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT (UNJ) SECOND END
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
THREAD QUANTITY PER INCH12 SECOND END


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