National Stock Number
                                            4310-00-400-4894
                                    
                                
                            
                            
                                National Stock Number (NSN) 4310-00-400-4894, or NIIN 004004894, (cylinder head,compressor) was assigned February 28, 1969 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs. 
There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.  
This part number has not been procured by the US Government in over 5 years. 
 
There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries.   
This NSN is assigned to Item Name Code (INC) 61616. [AN ITEM DESIGNED TO INCLOSE THE CYLINDER BORE(S) OF AN ENGINE BLOCK TO FORM A COMBUSTION CHAMBER(S). IT MAY HAVE LIQUID-COOLING PASSAGE(S) AND/OR AIR-COOLING FIN(S) AND MAY INCLUDE VALVE(S), VALVE GUIDE(S), SPRING(S), AND THE LIKE. IT IS A COMPONENT PART OF A COMPRESSOR, RECIPROCATING.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4310004004894 contains an unknown precious metal. 
This NSN is associated to Schedule B 8414902095: parts nesoi, of compressors other than refrigerating and air conditioning compressors. The Schedule B End Use is listed as industrial engines. NAICS classification category 333912: air and gas compressor manufacturing. 
This information was last updated on Aug 01, 2025.