Here is a link to Federal Product Service Codes and Federal Supply Codes. Revised Product Service Codes and Federal supply codes Effective 10/01/2011. The red codes expired 09/30/2011 and the blue codes have been added as of 10/01/2011
Product service codes are used by the United States government to describe the products, services, and research and development purchased by the government. Government procurement specialists and government contractors alike require a solid understanding of these codes in order to produce quality partnerships between buyers and suppliers.