SNUD

The SNUDAir Force Stock Number User Directory. database is used as a research tool to assist in locating retail lateral support. It contains all stock numbers for which participating activities have established user interest, as well as Air Force management data for each National Stock Numberidentifies the Forms, Publications, and Directives.. The types of stock numbers include NSNNational Stock Number - a 13-digit number assigned to a part under the Federal Cataloging Program. The first four digits of the NSN are the Federal Supply Class (FSC) of the part. The last nine digits are the National Item Identification Number (NIIN) of the part., Kit, and Non-cataloged and Non-designated numbers. Activities in the SNUD are identified with a SRANStock Record Account Number. code.