National Stock Number
6635-01-256-2167
National Stock Number (NSN) 6635-01-256-2167, or NIIN 012562167, (analyzer,particle size) was assigned June 3, 1987 in the Federal Logistics Information System (FLIS). NIIN 012562167 was cancelled on May 1, 2010, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. 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, there are no suppliers listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are 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) 19248. [A DEVICE DESIGNED TO DETERMINE THE SIZE DISTRIBUTION OF POWDERED MATERIALS BELOW THE 200 MESH SIEVE RANGE. THE METHOD EMPLOYED IS AN OSCILLATING U-SHAPED TUBE AND ENCASED AIR JET TO FURNISH THE AIR REQUIRED FOR SEPARATION. IT IS REGULATED IN ACCORDANCE WITH STOKES LAW OF FALL FOR MICROSCOPIC SIZE PARTICLES.]. 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 6635012562167 does not contain precious metals.
This information was last updated on Jul 01, 2025.