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A screw thread, often shortened to thread, is a helical structure used to convert between rotational and linear movement or force. A screw thread is an inclined plane wrapped around a cylinder or cone in the form of a helix, with the former being called a straight thread and the latter called a tapered thread. More screw threads are produced each year than any other machine element.[1]
Threads are generally produced according to one of the many standards of thread systems. Standards Development Organizations such as the American National Standards Institute, American Society of Mechanical Engineers, SAE International, International Organization for Standardization, Deutsches Institut für Normung (German Institute for Standardization), British Association and others produce these standards for manufacturers to follow when producing threaded components.
^Degarmo, Black & Kohser 2003, p. 741.
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any other machine element. Threads are generally produced according to one of the many standardsofthread systems. Standards Development Organizations...
Unified ThreadStandard (UTS) defines a standardthread form and series—along with allowances, tolerances, and designations—for screw threads commonly...
adopted as a British Standard. It was the world's first national screw threadstandard, and is the basis for many other standards, such as BSF, BSP, BSCon...
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metric screw thread is the most commonly used type of general-purpose screw thread worldwide. They were one of the first international standards agreed when...
This is an incomplete listof DIN standards. The "STATUS" column gives the latest known status of the standard. If a standard has been withdrawn and no...
The standard also covers various types of seams. Under this classification of stitches there are basic groups as follows: Class 100 - Single Thread Chainstitch...
International Standards ISO 4014, ISO 4017, and ISO 4032. The following table lists the relationship given in these standards between the thread size and the...
National Standards Body (NSB) for the UK). The BSI Group produces British Standards under the authority of the Charter, which lays down as one of the BSI's...
international standards organization that prepares and publishes international standards for all electrical, electronic and related technologies. IEC standards cover...
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This is a listof types ofthreaded fasteners, including both screws and bolts. "Aspen Fasteners". "Tricks of the Trade". Motorcycle Mechanics. 2 (12)...
international standard is a technical standard developed by one or more international standards organizations. International standards are available for...
respectively to the current standard. In addition to industry standards, there are special threadstandards, such as the bicycle threads according to DIN 79012...
A standards organization, standards body, standards developing organization (SDO), or standards setting organization (SSO) is an organization whose primary...
International Standards Organisation.{{cite book}}: CS1 maint: numeric names: authors list (link) ISO 11363-1:2010 Gas cylinders — 17E and 25E taper threads for...
called National Pipe Size, due to confusion with the American standard for pipe threads, "national pipe straight", which also abbreviates as "NPS". The...
international standard that defines mechanical and physical properties for metric fasteners. This standard is the origin for other standards that define...
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