National Stock Number
5620-00-297-5378
National Stock Number (NSN) 5620-00-297-5378, or NIIN 002975378, (concrete masonry unit,hollow) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN.
This part number has not been procured by the US Government in over 5 years.
This NSN is unique to one weapons system.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jul 02, 2011, this NSN's acquisition method was noted as: Not established. Not established.
This NSN is assigned to Item Name Code (INC) 07621. [A PRECAST CONCRETE BLOCK, BASICALLY RECTANGULAR, WITH ONE OR MORE CELLS EXTENDING VERTICALLY THROUGH THE BLOCK. IT IS USED IN THE CONSTRUCTION OF MASONRY WALLS.]. 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 5620002975378 does not contain precious metals.
This NSN is associated to Schedule B 6810195000: artcls, nesoi, of cement, concrete or artificial stone except bldg blcks a brcks, floor or wall tiles. The Schedule B End Use is listed as shingles, molding, wallboard. NAICS classification category 327390: other concrete product manufacturing.
This information was last updated on Aug 01, 2025.