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National Stock Number:
4730-00-277-1921
Federal Supply Class:
4730
National Item Identification Number:
002771921
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.
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Manufacturer Information:
| 4730PL0965831 | 9009H | INSPEKTORAT WSPARCIA SIL ZBROJNYCH | | 8169041 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | AN939-4 | 00624 | EATON AEROQUIP LLC | | AN939-4 | 06581 | ALLAN AIRCRAFT SUPPLY CO., LLC | | AN939-4 | 13899 | HYDRO-FITTING MANUFACTURING CORPORATION | | AN934-4 | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE | | AN939-4 | 14397 | FABER ENTERPRISES, INC. | | AN939-4 | 14798 | DESIGNED METAL CONNECTIONS INC | | AN939-4 | 22995 | CROWN FITTING CO INC | | AN939-4 | 30974 | AEROFIT, LLC | | AN939-4 | 71563 | COLLINS ENGINEERING CORP | | AS4875 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC | | AN939-4 | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE | | AN939-4 | R1120 | SATAIR A/S | | AS5190 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC | | AS5190-04 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC | | SAE AS4875 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC | | SAE AS5190 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC |
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Techincal Specification:
| CONNECTION TYPE | THREADED INTERNAL BOSS ALL ENDS | | MATERIAL | STEEL COMP 4130 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | MAXIMUM OPERATING PRESSURE | 3000.00 POUNDS PER SQUARE INCH SINGLE RESPONSE | | CONNECTION STYLE | GASKET SEAL (BOSS) ALL ENDS | | NOMINAL WIDTH | 0.744 INCHES 1ST END | | NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED | 0.250 INCHES 1ST END | | THREAD SERIES DESIGNATOR | UNJF ALL ENDS | | NOMINAL THREAD SIZE | 0.4375 INCHES 1ST END | | THREAD QUANTITY PER INCH | 20 ALL ENDS | | THREAD CLASS | 3B ALL ENDS | | LEG LENGTH | 0.750 INCHES NOMINAL 1ST END | | FLOW ANGLE | 90.0 DEGREES | | SPECIAL TEST FEATURES | MATERIAL: 4130 CARBON STEEL FORGING OR BAR PER AMS-S-6758 OR AMS 6370,OR TYPE 4140 PER AMS 6382, FINISH:CADMIUM PLATE PER QQ-P-416,TYPE II, CLASS 2, DYE BLACK AND COAT WITH A LIGHT FILM OF OIL PER PROCUREMENT SPECIFICATION | | SPECIFICATION/STANDARD DATA | 88044-AN939 GOVERNMENT STANDARD | | PART NAME ASSIGNED BY CONTROLLING AGENCY | FITTING,ELBOW 90(DEGREES),INTERNAL STRAIGHT THREAD PORT |
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