National Stock Number
                                            5120-01-587-8635
                                    
                                
                            
                            
                                National Stock Number (NSN) 5120-01-587-8635, or NIIN 015878635, (installation tool,retaining ring) was assigned August 24, 2010 in the Federal Logistics Information System (FLIS).   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 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts.  
This part number has not been procured by the US Government in over 5 years. 
 
   
This NSN is assigned to Item Name Code (INC) 33816. [AN ITEM DESIGNED TO FACILITATE PLACEMENT OF VARIOUS SIZE RADIALLY-INSTALLED RINGS. IT HAS STRAIGHT, ANGLED, AND/OR OFFSET SLOTTED BLADE TIPS, WITH MILLED RECESS UNDERSIDE. IT MAY OR MAY NOT INCLUDE UNDERSIDE SPRING TENSION ARM.]. 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 5120015878635 does not contain precious metals. 
This information was last updated on Aug 01, 2025.