National Stock Number
7520-00-399-7998
National Stock Number (NSN) 7520-00-399-7998, or NIIN 003997998, (slide rule) 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 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) 04375. [A DEVICE HAVING SEVERAL STANDARD SCALES FOR PERFORMING ARITHMETICAL, ALGEBRAICAL, AND TRIGONOMETRICAL CALCULATIONS BY MECHANICAL MEANS.]. 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 7520003997998 does not contain precious metals.
This NSN is associated to Schedule B 9017204000: dis calculators, slide rulers and other mathematical calculating instruments. The Schedule B End Use is listed as laboratory testing instruments. NAICS classification category 334519: other measuring and controlling device manufacturing.
This information was last updated on Aug 01, 2025.