National Stock Number
4820-01-125-7539
National Stock Number (NSN) 4820-01-125-7539, or NIIN 011257539, (cock,poppet drain) was assigned February 1, 1982 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.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 16989. [AN ITEM DESIGNED TO DRAIN FLUIDS FROM FUEL SYSTEMS, TANKS, FILTERS, OR SIMILAR ITEMS. IT HAS A MOUNTING END, A FREE FLOWING END, AND A QUICK-ACTING NONMETALLIC SEALED CLOSURE, USUALLY SPRING LOADED, THAT HOLDS IT IN AN "OFF" POSITION. IT REQUIRES NO LUBRICATION OTHER THAN FROM THE FLUID BEING DRAINED.]. 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 4820011257539 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.