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		                        | National Stock Number:
 4730-00-722-5558
 
 Federal Supply Class:
 4730
 
 National Item Identification Number:
 007225558
 
 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:
 
 | AN893-3S | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE |  | AS4875 | 0U583 | SAE INTERNATIONAL |  | AS5172 | 0U583 | SAE INTERNATIONAL |  | AS5172R0408L | 0U583 | SAE INTERNATIONAL |  | AS4875 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC |  | AS5172 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC |  | SAE-AS4875 | 0U583 | SAE INTERNATIONAL |  | AS5172R0408L | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC |  | MILF5509 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | 
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 Techincal Specification:
 
 | MATERIAL | STEEL CORROSION RESISTING OVERALL | 
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