National Stock Number (NSN) 3020-01-101-9557, or NIIN 011019557, (chain,leaf) was assigned October 9, 1980 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers 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, 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 a year. There have been 14 contracts issued for this part number, with 16 awards given. There is moderate competition for this NSN. The US Government has awarded contracts to 6 different suppliers. The last contract numbers awarded were: SPE7L524V0976, SPE7L524V0893, SPE7L523P1159, SPE7L521V2708, SPE7L521V0203. The total value of the awarded contracts has been US$ 42,778.63.
This NSN is somewhat common among different platforms, belonging to 6 different weapons systems.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Sep 20, 2008, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 33508. [A FLEXIBLE MECHANICAL DEVICE CONSISTING OF FLAT LEAF PLATES ASSEMBLED WITH PINS OR RIVETS TO FORM A CHAIN. THE CHAIN USES A FLANGED SHEAVE IN LIEU OF A SPROCKET. EACH END HAS A TERMINATION HOLE THROUGH WHICH SECURING PINS ARE INSERTED WHEN THE CHAIN TERMINATIONS ARE ATTACHED. EXCLUDES:CHAIN, SILENT; AND CHAIN, BLOCK.]. 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 3020011019557 contains an unknown precious metal.
This NSN is associated to Schedule B 7315890000: other chain, not welded link, nesoi, of iron or steel. The Schedule B End Use is listed as finished metal shapes. NAICS classification category 332618: other fabricated wire product manufacturing.
This information was last updated on Jun 01, 2025.