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National Stock Number:
4730-00-201-4705
Federal Supply Class:
4730
National Item Identification Number:
002014705
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:
| 21789-2 | 17610 | ROCKWELL COLLINS INC | | 90C0001 | 0BUJ0 | DASH ENGINEERING INC DBA D E I | | A51K9035-17 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | MSS21789-2 | 62727 | MID-STATE SALES, INC. |
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Techincal Specification:
| CONNECTION TYPE | THREADED INTERNAL BOSS 1ST END | | THREADED EXTERNAL BOSS 2ND END | | MATERIAL | STEEL COMP 303 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-769,TYPE 303SE,CONDITION A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | 11-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | CONNECTION STYLE | GASKET SEAL (BOSS) 1ST END | | EXTERNAL SEAT FOR GASKET SEAL (BOSS) 2ND END | | THREAD SERIES DESIGNATOR | UNF ALL ENDS | | NOMINAL THREAD SIZE | 0.250 INCHES 1ST END | | 0.625 INCHES 2ND END | | THREAD CLASS | 2B 1ST END | | 2A 2ND END | | LEG LENGTH | 0.683 INCHES NOMINAL 1ST END | | 0.893 INCHES NOMINAL 2ND END | | FLOW ANGLE | 90.0 DEGREES | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 17610 | | DESIGN CONTROL REFERENCE | 21789-2 |
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