National Stock Number
2520-01-183-8991
National Stock Number (NSN) 2520-01-183-8991, or NIIN 011838991, (modulator,transmission) was assigned July 11, 1984 in the Federal Logistics Information System (FLIS). NIIN 011838991 was cancelled on May 1, 2010, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There are 6 manufacturer part numbers associated with this NSN. 3 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 5 suppliers. Today, 3 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are 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 assigned to Item Name Code (INC) 36164. [A VACUUM ACTUATED DEVICE DESIGNED TO AUTOMATICALLY SENSE ANY CHANGE IN THE TORQUE INPUT TO AN AUTOMATIC TRANSMISSION. THE CHANGE IS TRANSMITTED TO A PRESSURE REGULATOR TO OBTAIN SMOOTH SHIFTING.]. 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 2520011838991 does not contain precious metals.
This information was last updated on May 01, 2025.