National Stock Number (NSN) 4820-00-555-9761, or NIIN 005559761, (cock,drain) was assigned January 20, 1969 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 6 stock numbers. Five of the National Stock Numbers that it replaces are: 4820011958431, 4820002036950, 4820004598357, 4820002723344, 4820005807056.
There are 44 manufacturer part numbers associated with this NSN. 24 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 38 suppliers. Today, 24 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, there are no suppliers that are 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, with the most recent procurement date of Oct 18, 2010. There have been 5 contracts issued for this part number, with 7 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 4 different suppliers. The last contract numbers awarded were: SPM7M211M0336, SPM7M211M0336, SPM7M210M6713, SPM7M210M6713, SPM7M010M6696. The total value of the awarded contracts has been US$ 11,854.04.
This NSN is fairly common among different weapons systems, belonging to 19 different platforms.
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 Jun 02, 2006, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.
This NSN is assigned to Item Name Code (INC) 16988. [AN ITEM WITH ONE MOUNTING END AND ONE FREE FLOWING END WITH A METAL TO METAL VALVE CLOSURE. IT IS DESIGNED TO DRAIN FLUIDS FROM RADIATORS, BOILERS, AND SIMILAR ITEMS.]. This item does not have a nuclear hardened feature but does have other critical feature(s) 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 4820005559761 does not contain precious metals.
This NSN is associated to Schedule B 8481909090: parts of taps, cocks, valves and similar appliances, nesoi. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 332911: industrial valve manufacturing.
This information was last updated on Aug 01, 2025.