National Stock Number
4910-12-355-6401
National Stock Number (NSN) 4910-12-355-6401, or NIIN 123556401, (adapter,cylinder compression tester) has an unknown assigned date. 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, with the most recent procurement date of Mar 16, 2020. There has been one contract issued for this part number, with one award given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPE7L320P3674. The total value of the awarded contracts has been US$ 41,630.60.
This NSN is unique to one weapons system.
There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries.
This NSN is assigned to Item Name Code (INC) 21837. [AN ITEM USED TO ADAPT THE STEM OF A TESTER, CYLINDER COMPRESSION TO VARIOUS SIZE AUTOMOTIVE SPARK PLUG PORTS. IT MAY BE A THREADED TYPE TO FIT A DESIGNATED SPARK PLUG PORT OR A UNIVERSAL TYPE DESIGNED TO ACCOMMODATE A RANGE OF SIZES. IT MAY BE FASTENED TO THE TESTER STEM BY MEANS OF A QUICK CHANGE OR THREADED CONNECTOR.].
This information was last updated on Aug 11, 2025.