National Stock Number
1680-00-540-5343
National Stock Number (NSN) 1680-00-540-5343, or NIIN 005405343, (reel,shoulder harness,inertia lock) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). NIIN 005405343 was cancelled on December 2, 2001, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. This NSN replaces 2 stock numbers: 1680005170346, 1680000652466.
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) 19338. [A ROTARY DEVICE DESIGNED TO BE INSTALLED IN AN AIRCRAFT TO AUTOMATICALLY CONTROL THE EXTENSION AND RETRACTION OF A SHOULDER HARNESS ATTACHMENT CABLE OR WEBBING. IT INCORPORATES AN INERTIA LOCKING MECHANISM THAT RESTRAINS THE FORWARD MOVEMENT OF FLIGHT PERSONNEL IN THE EVENT OF ABRUPT DECELERATION OF THE AIRCRAFT. IT MAY INCLUDE THE ATTACHMENT CABLE OR WEBBING AND THE MANUALLY OR ELECTRICALLY OPERATED CONTROLS.]. 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 1680005405343 contains an unknown precious metal.
This information was last updated on Jul 01, 2025.