DLMS™ Summary National Stock Number 1020-01-613-3860 National Stock Number (NSN) 1020-01-613-3860, or NIIN 016133860, (breechblock) was assigned November 6, 2012 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 assigned to Item Name Code (INC) 22188. [A MOVABLE STEEL BLOCK IN THE MECHANISM OF A BREECHLOADING GUN THAT SEALS THE BREECH OPENING OF THE BARREL DURING FIRING. EXCLUDES BOLT, AUTOMATIC WEAPON.]. 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 1020016133860 does not contain precious metals. This NSN is associated to Schedule B 9305913010: parts and accessories of military artillery weapons of 9301.11 or 9301.19. The Schedule B End Use is listed as tanks, artillery, missiles, rockets, guns and ammunition. NAICS classification category 332994: small arms, ordnance, and ordnance accessories manufacturing. This information was last updated on Feb 01, 2017.