National Stock Number
5310-01-616-5607
National Stock Number (NSN) 5310-01-616-5607, or NIIN 016165607, (washer,preload indicating) was assigned February 20, 2013 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. 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.
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) 42430. [AN ITEM ROUND IN SHAPE HAVING A CENTRALLY LOCATED HOLE. IT CONSISTS OF TWO CONCENTRIC (INNER AND OUTER) STEEL RINGS, THE INNER RING IS SMALLER IN DIAMETER AND HIGHER THAN THE OTHER. THESE RINGS ARE SANDWICHED BETWEEN TWO CLOSE TOLERANCE PLAIN WASHERS. AS THE ASSEMBLY IS TIGHTENED, THE INNER RING TAKES THE LOAD AND IS DEFORMED UNTIL THE LOOSE OUTER RING IS BOUND BETWEEN THE UPPER AND LOWER PLAIN WASHERS AND CANNOT BE MOVED. THE TIGHTENED LOAD IN THE BOLT IS EQUAL TO THE LOAD REQUIRED TO COMPRESS THE INNER RING. WHEN THE BINDING OF THE OUTER RING OCCURS AND CAN NOT BE MOVED, IT IS A SIGN THAT THE DESIRED LOAD HAS BEEN REACHED.]. 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 5310016165607 does not contain precious metals.
This information was last updated on Aug 01, 2025.