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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.
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Manufacturer Information:
| ST7M194-1 | 28444 | BR MACHINE PARTS INC | | ST7M194-1 | 76301 | THE BOEING COMPANY |
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Techincal Specification:
| CONNECTION TYPE | THREADED INTERNAL BOSS ALL ENDS | | MATERIAL | STEEL OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764,COND B FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PRIMER OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-P-23377 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | CONNECTION STYLE | GASKET SEAL (BOSS) ALL ENDS | | THREAD SERIES DESIGNATOR | UNF ALL ENDS | | NOMINAL THREAD SIZE | 0.375 INCHES ALL ENDS | | THREAD CLASS | 3B ALL ENDS | | LEG LENGTH | 0.650 INCHES NOMINAL 1ST END | | 0.855 INCHES NOMINAL 2ND END | | FLOW ANGLE | 90.0 DEGREES | | CRITICALITY CODE JUSTIFICATION | FEAT | | SPECIAL FEATURES | 1ST END BULKHEAD,0.625,CL 3A,1ST END,UNF;WEAPON SYSTEM ESSENTIAL |
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