Search results
Results from the WOW.Com Content Network
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.
Pages in category "American National Standards Institute standards" The following 33 pages are in this category, out of 33 total. This list may not reflect recent changes .
X3J13 is the name of a technical committee which was part of the International Committee for Information Technology Standards (INCITS, then named X3).The X3J13 committee was formed in 1986 to draw up an American National Standards Institute (ANSI) Common Lisp standard based on the first edition of the book Common Lisp the Language (also termed CLtL, or CLtL1), by Guy L. Steele Jr., which was ...
The addendum circle coincides with the tops of the teeth of a gear and is concentric with the standard (reference) pitch circle and radially distant from it by the amount of the addendum. For external gears, the addendum circle lies on the outside cylinder while on internal gears the addendum circle lies on the internal cylinder. [1]
ANSI was most likely formed in 1918, when five engineering societies and three government agencies founded the American Engineering Standards Committee (AESC). [8] In 1928, the AESC became the American Standards Association (ASA). In 1966, the ASA was reorganized and became United States of America Standards Institute (USASI). The present name ...
Many corporations have such standards, which define some terms and symbols specific to them; on the national and international level, ASME standard Y14.38 [1] is one of the standards. Australia utilises the Technical Drawing standards AS1100.101 (General Principals), AS1100-201 (Mechanical Engineering Drawing) and AS1100-301 (Structural ...
The moments of inertia of a mass have units of dimension ML 2 ([mass] × [length] 2). It should not be confused with the second moment of area, which has units of dimension L 4 ([length] 4) and is used in beam calculations. The mass moment of inertia is often also known as the rotational inertia, and sometimes as the angular mass.
Each unit represented in UCUM is identified as either "metric" or "non-metric". [5] Metric units can accept metric prefixes as in SI. Non-metric units are not permitted to be used with prefixes. All of the base units are metric. UCUM refers to units that are defined on non-ratio scales as "special units". Common examples include the bel and ...