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National Aerospace Standards (NAS) are U.S. industry standards for the aerospace industry. They are created and maintained by the Aerospace Industries Association (AIA). [ 1 ] The Federal Aviation Administration recognizes National Aerospace Standards as "traditional standards" for the purposes of parts approval.
National Pipe Taper Fuel (NPTF, also called Dryseal American National Standard Taper Pipe Thread, defined by ASME B1.20.3) is designed to provide a more leak-free seal without the use of PTFE tape (often referred to by the popular brand name "Teflon") or another sealant compound. NPTF threads have the same basic shape but with crest and root ...
United States Standard thread (USS thread), also known as Sellers Standard thread, [1] Franklin Institute thread [1] and American Standard thread, [2] is a standard for inch based threaded fasteners and washers. [3] The USS standard is no longer supported. It, together with the SAE fastener standard, was incorporated into the Unified Thread ...
The Industrial Fasteners Institute (IFI) [1] is an American non-profit trade and standards organization and publisher, based in Independence, Ohio. It was founded as the American Institute of Bolt, Nut and Rivet Manufacturers in 1931 and changed its name to the IFI in 1949. [ 2 ]
The standard designation for a UTS thread is a number indicating the nominal (major) diameter of the thread, followed by the pitch measured in threads per inch.For diameters smaller than 1 / 4 inch, the diameter is indicated by an integer number defined in the standard; for all other diameters, the inch figure is given.
In 1986 NCH added direct mail, telemarketing, and catalog sales to its arsenal of marketing techniques. Cornerstone Direct was formed for this purpose, offering material handling equipment, first-aid kits, and other industrial supplies. Sales growth returned in the second half of the 1980s, breaking $400 million in 1987 and $500 million in 1988.
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