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		                        | National Stock Number:
 4730-00-729-5424
 
 Federal Supply Class:
 4730
 
 National Item Identification Number:
 007295424
 
 Description:
 REDUCER,BOSS
 
 Detail:
 A straight fitting having a boss connection of a different size at each end. Both connections have external 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. Excludes BUSHING (as modified).
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 Manufacturer Information:
 
 | AN893-8C | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE |  | AN893-8J | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE |  | AS5172J0508L | 0U583 | SAE INTERNATIONAL |  | SAE-AS4875 | 0U583 | SAE INTERNATIONAL |  | AS5172J0508L | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC | 
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 Techincal Specification:
 
 | MATERIAL | STEEL COMP 304 OVERALL |  | CONNECTION TYPE | THREADED INTERNAL BOSS 1ST END |  |  | THREADED EXTERNAL BOSS 2ND END |  | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |  | SURFACE TREATMENT | PASSIVATE INSIDE |  |  | PASSIVATE OUTSIDE |  | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE |  |  | MIL-F-14072,E300,TY2 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE |  | CONNECTION STYLE | GASKET SEAL (BOSS) 1ST END |  |  | EXTERNAL SEAT FOR GASKET SEAL (BOSS) 2ND END |  | THREAD SERIES DESIGNATOR | UNF 1ST END |  |  | UNF 2ND END |  | NOMINAL THREAD SIZE | 0.500 INCHES 1ST END |  |  | 0.750 INCHES 2ND END |  | THREAD CLASS | 3B 1ST END |  |  | 3A 2ND END |  | NOMINAL OVERALL LENGTH | 1.109 INCHES |  | REDUCER TYPE | CONCENTRIC | 
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