National Stock Number
3940-00-072-0323
National Stock Number (NSN) 3940-00-072-0323, or NIIN 000720323, (block,tackle) was assigned July 27, 1967 in the Federal Logistics Information System (FLIS). NIIN 000720323 was cancelled on March 3, 2005, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. This NSN replaces 1 stock number, 3940002426294.
There are no manufacturer part numbers associated to this NSN. ISO Group has several sources of supply for 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) 06117. [A MECHANICAL DEVICE, CONSISTING OF A PULLEY(S) OR SHEAVE(S) ENCASED IN A SHELL OR FRAME WHICH MAY BE PROVIDED WITH A MEANS SUCH AS A HOOK, EYE, STRAP, SCREW, AND THE LIKE, BY WHICH IT MAY BE ATTACHED TO AN OBJECT. IT IS USED TO CHANGE DIRECTION OF RUNNING ROPE AND\OR TO GAIN A MECHANICAL ADVANTAGE.]. This item does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 3940000720323 does not contain precious metals.
This information was last updated on Aug 01, 2025.