3020-00-340-0826 GEAR CLUSTER Index 4730-00-340-0830 FERRULE,SWAGE,TUBE COUPLING

National Stock Number:
4730-00-340-0827

Federal Supply Class:
4730

National Item Identification Number:
003400827

Description:
ELBOW,BOSS

Detail:
A FITTING THAT FORMS AN ANGLE OF LESS THAN 180 DEGREES (3.141 RADIANS) FROM THE STRAIGHT FLOW. THE BOSS CONNECTIONS HAVE EXTERNAL AND/OR INTERNAL MACHINE THREADS (STRAIGHT THREADS OTHER THAN PIPE OR HOSE SERIES), AND ARE DESIGNED TO FACILITATE A GASKET, PREFORMED PACKING, WASHER, OR THE LIKE, TO FORM A SEAL AT THE BOSS. IT MAY HAVE SIDE OR HEEL INLET(S). IT IS DESIGNED TO JOIN TWO BOSSES OR BOSS FITTINGS ON ITEMS SUCH AS TANKS, HOUSINGS, VALVE FITTINGS, AND THE LIKE. EXCLUDES ELBOW, TUBE.


Manufacturer Information:
ST7M194-128444BR MACHINE PARTS INC
ST7M194-176301THE BOEING COMPANY


Techincal Specification:
CONNECTION TYPETHREADED INTERNAL BOSS ALL ENDS
CONNECTION STYLEGASKET SEAL (BOSS) ALL ENDS
CRITICALITY CODE JUSTIFICATIONFEAT
FLOW ANGLE90.0 DEGREES
LEG LENGTH0.650 INCHES NOMINAL 1ST END
LEG LENGTH0.855 INCHES NOMINAL 2ND END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764,COND B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE0.375 INCHES ALL ENDS
SPECIAL FEATURES1ST END BULKHEAD,0.625,CL 3A,1ST END,UNF;WEAPON SYSTEM ESSENTIAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-P-23377 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPRIMER OVERALL
THREAD CLASS3B ALL ENDS
THREAD SERIES DESIGNATORUNF ALL ENDS


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