HMDF Data

The Hazardous Materials Data File data includes special handling instructions, transportation codes, and other applicable/available information as it relates to the item and 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. used as search criteria.