National Stock Number
6850-01-198-6633
National Stock Number (NSN) 6850-01-198-6633, or NIIN 011986633, (scale removing compound) was assigned January 11, 1985 in the Federal Logistics Information System (FLIS). NIIN 011986633 was cancelled on January 2, 2016, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. 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 5 years.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on May 19, 2020, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. This part is a commercial/non-developmental/off-the-shelf-item. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 16638. [A CHEMICAL PRODUCT DESIGNED FOR REMOVAL OF MATERIAL DEPOSITED ON METAL SURFACES, USUALLY ON INTERIOR SURFACES SUCH AS EVAPORATOR TUBES AND HEAT EXCHANGERS. EXCLUDES:SCALE PREVENTION COMPOUNDS, INHIBITORS, AND CORROSION REMOVING COMPOUND.]. Information is in the Hazardous Materials Information Resource System (HMIRS). NSN 6850011986633 does not contain precious metals.
This information was last updated on Aug 01, 2025.