National Stock Number
5340-00-056-1231
National Stock Number (NSN) 5340-00-056-1231, or NIIN 000561231, (bolt assembly,clamp) 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 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 3 suppliers. Today, 3 suppliers are listed as Active suppliers 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 8 different weapons systems.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 12, 2013, 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 data or the rights to use the data needed to purchase this part from additional sources are not owned by the Government and it has been determined that it is uneconomical to purchase them. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 20271. [A THREADED ITEM HAVING AN EYE ON ONE END DESIGNED TO ACCOMMODATE A HINGE PIN, OR A PIN INSERTED AT RIGHT ANGLES TO THE SHANK. IT MUST HAVE AN ADJUSTING NUT ASSEMBLED ON THE THREADS. THE END OF THE THREADS MAY BE HEADED, OR A CAP NUT OR SIMILAR DEVICE ATTACHED TO PREVENT DISASSEMBLY OF THE ADJUSTING NUT. IT MAY ALSO HAVE A WASHER, COLLAR OR RETAINER ASSEMBLED BETWEEN THE NUT AND HINGE MOUNTED END. INCLUDES ITEMS HAVING A BRACKET OR LUG MOUNTING. IT IS USED TO RIGIDLY CLAMP ITEMS TO A STRUCTURE, INSTRUMENT, OR THE LIKE.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 5340000561231 contains an unknown precious metal.
This NSN is associated to Schedule B 7318152000: bolts and bolts and their nuts or washers exported in the same shipment. The Schedule B End Use is listed as iron and steel products, other. NAICS classification category 332722: bolt, nut, screw, rivet, and washer manufacturing.
This information was last updated on Aug 01, 2025.