National Stock Number (NSN) 4910-01-039-1555, or NIIN 010391555, (grinding machine,valve seat,elec) was assigned April 16, 1977 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers associated with this NSN. One of those 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.
This NSN is somewhat common among different platforms, belonging to 2 different weapons systems.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Sep 02, 2005, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The Government physically does not have in its possession sufficient, accurate, or legible data to purchase this part from other than current source(s). (NOTE: This code is applicable only to parts under immediate buy requirements and only as long as the deficiency is under review for resolution and appropriate recoding.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 21423. [A MOTOR DRIVEN GRINDING MACHINE THAT UTILIZES AN ABRASIVE WHEEL, DESIGNED FOR PRECISION GRINDING AND REFINISHING OF INTERNAL COMBUSTION ENGINE VALVE SEATS. IT CONSISTS ESSENTIALLY OF A BASE, UPRIGHT AND GRINDING SUPPORTS, WORK HOLDER, ELECTRIC MOTOR(S), SPINDLE(S), GRINDING HEAD(S), GAGE(S), AND ANY NECESSARY ACCESSORIES SUCH AS DIAMOND DRESSERS AND ABRASIVE WHEEL SETS. IT USUALLY HAS A COOLANT SYSTEM FOR WET GRINDING AND IT MAY BE PORTABLE (DISASSEMBLED IN CONTAINER BASE) FOR EASE OF TRANSPORTATION. EXCLUDES:GRINDING KIT, VALVE SEAT, ELECTRIC.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4910010391555 contains an unknown precious metal.
This NSN is associated to Schedule B 8479899860: automotive maintenance machines, nesoi. The Schedule B End Use is listed as photo, service industry machinery.
This information was last updated on May 01, 2025.