National Stock Number
                                            4730-01-028-1318
                                    
                                
                            
                            
                                National Stock Number (NSN) 4730-01-028-1318, or NIIN 010281318, (bushing,pipe) was assigned September 24, 1976 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 4730013142630. 
There are no manufacturer part numbers associated to this NSN. ISO Group has several sources of supply for this NSN. 
This part number has not been procured by the US Government in over 5 years. 
This NSN is unique to one weapons system. 
   
This NSN is assigned to Item Name Code (INC) 03779. [A FITTING WITH PIPE THREADS HAVING A FEMALE CONNECTION INSIDE OF A MALE CONNECTION, USED IN CONJUNCTION WITH ANOTHER FITTING, TO CONNECT IN THE SAME LINE, TWO PIPES OF DIFFERENT SIZES.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4730010281318 contains an unknown precious metal. 
This NSN is associated to Schedule B 7412200000: copper alloy tube or pipe fittings. The Schedule B End Use is listed as finished metal shapes. NAICS classification category 332919: other metal valve and pipe fitting manufacturing. 
This information was last updated on Aug 01, 2025.