Use these tools to search for standards, to access them check OSU Libraries first using the Standards guide. 

NSSN Search Engine for Standards
https://www.ansi.org/

Techstreet Standards and Specifications Search
http://www.techstreet.com/

American Association of State Highway and Transportation Officials (AASHTO)
http://www.aashto.org/

American Petroleum Institute (API)
http://www.api.org/

Department of Energy (DOE) Technical Standards Program
http://energy.gov/ehss/services

Electric Industries Association (EIA)
www.ecianow.org

Institute of Electrical and Electronics Engineers (IEEE)
http://standards.ieee.org/index.html
All active IEEE Standards are available to authorized OSU users through the OSU Libraries' subscription to the IEEE/IEE Electronic Library.

International Organization for Standardization (ISO)
http://www.iso.ch/

International Telecommunications Union (ITO)
http://www.itu.ch/

National Information Standards Organization (NISO)
http://www.niso.org/

National Institute of Standards and Technology (NIST)
http://www.nist.gov/

National Resource for Global Standards (NSSN)
https://www.ansi.org/

Standards Council of Canada (SCC)
http://www.scc.ca/

Underwriters Laboratories (UL)
http://www.ul.com/