Standards of the United States

type of technical standard

lightbulb socket that uses a threaded metal base

Public Key Cryptography Standards (PKCS) are a group of public-key cryptography intervendor standards first developed by RSA Security, with involvement from Apple, Digital, Lotus Software, Microsoft, MIT, Nothern Telecom, and Sun Microsystems, first published in June 1991.

digital data format for audio cassette drives

color used on North American school buses

standard for screw threads in North America, whose characteristic dimensions are based on inch fractions

organization

system of standards used by NATO to classify the safe amount of load a surface can withstand

U.S. national technical standards for threads on pipes and pipe fittings, including both tapered and straight thread series for various purposes

highway system

Standard for Safety of Flammability of Plastic Materials for Parts in Devices and Appliances testing

five-digit standard code for counties in the US

U.S. government cryptographic standard

US federal vehicle regulations

C-QUAM (Compatible QUadrature Amplitude Modulation) is the method of AM stereo broadcasting used in Canada, the United States and most other countries. It was invented in 1977 by Norman Parker, Francis Hilbert, and Yoshio Sakaie, and published in an IEEE journal.