National Stock Number
4820-00-174-0339
National Stock Number (NSN) 4820-00-174-0339, or NIIN 001740339, (cock,drain) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 9 stock numbers. Five of the National Stock Numbers that it replaces are: 4820014387561, 4820001371796, 2930005552008, 2530009342388, 2805005295499.
There are 33 manufacturer part numbers associated with this NSN. 26 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 25 suppliers. Today, 14 suppliers are listed as Active suppliers 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.
This NSN is very common among different weapons systems, belonging to 40 different platforms.
There has been very little 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 Aug 02, 2004, 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 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 4820001740339 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.