Preferred metric sizes are a set of international standards and de facto standards that are designed to make using the metric system easier and simpler, especially in engineering and construction practices. One of the methods used to arrive at these preferred sizes is the use of preferred numbers and convenient numbers, such as the Renard series and 1-2-5 series, to limit the number of different sizes of components needed.
One of the largest benefits of such limits is an ensuing multiplicative or exponential reduction in the number of parts, tools and other items needed to support the installation and maintenance of the items built using these techniques. This occurs because eliminating one diameter fastener will typically allow the elimination of a large number of variations on that diameter (multiple thread pitches, multiple lengths, multiple tip types, multiple head types, multiple drive types, and the tools needed for installing each, including multiple drill bits (one for each different thread pitch, material, and fit combination).
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Preferredmetricsizes are a set of international standards and de facto standards that are designed to make using the metric system easier and simpler...
drill and tap sizes National pipe thread (NPT) National thread Nominal size Panzergewinde Photographic Filter thread Preferredmetricsizes Screw thread...
Nominal impedance Nominal sizePreferredmetricsizes Milton, Hans J. (December 1978). "The Selection of PreferredMetric Values for Design and Construction"...
tapping sizes can be found at the drill and tap size chart. Metric drill bit sizes define the diameter of the bit in terms of standard metric lengths...
quantities and their units, superseding ISO 31 List of metric units Metrology Preferredmetricsizes Unified Code for Units of Measure Non-SI units for time...
Sheet pan Preferredmetricsizes Eurocontainer, a system for boxes that can be used for reusable packaging for transport and storage "GN Sizes PDF" (PDF)...
standard for sizes on containers for kitchen use Manual handling of loads Milk crate, a similarly-sized standardized container Preferredmetricsizes Reusable...
labelling clothes sizes, resulting in the standard EN 13402 "Size designation of clothes". It is based on: body dimensions the metric system (SI) data...
standard for paper sizes. Each ISO paper size is one half of the area of the next larger size in the same series. ISO paper sizes are all based on a single...
30 cm or one foot): "The speed of light is one foot per nanosecond." A metric foot, defined as 300 millimetres (approximately 11.811 inches), has been...
the metric system of measurement. All over the world, countries have transitioned from local and traditional units of measurement to the metric system...
diameter, but their size is rarely mentioned; mini CDs are sometimes called 80 mm CDs. Computer fan sizes are exclusively referred to by metric units (120 mm...
hypercube or a set of scattered points. The diameter or metric diameter of a subset of a metric space is the least upper bound of the set of all distances...
System Adjustable shelving Euro container, standard for container sizesPreferredmetricsizes Reusable packaging Reverse logistics Buckley, Bob (1999). True32...
paper sizes, used around the world except in North America and parts of Latin America. The standard defines the "A", "B" and "C" series of paper sizes, which...
scientific research use the metric system. Imperial units are officially used to specify journey distances, vehicle speeds and the sizes of returnable milk containers...
For sizes 1⁄4 inch and larger the size is given as a fraction; for sizes less than this an integer is used, ranging from 0 to 16. The integer sizes can...
for specific bar sizes, for example under ASTM A615, Grade 40 (280 MPa) is only furnished for US bar sizes #3 through #6 (soft metric No.10 through 19)...
standardised sizes Floating shelf French cleat, modular way of securing objects to a wall, e.g. for adjustable shelving Preferredmetricsizes Demetrius...
runway length, etc.) use metric units. Screen sizes for devices such as televisions, monitors and phones, and wheel rim sizes for vehicles, are stated...
fractions of the units. Units of various sizes are commonly formed by the use of such prefixes. The prefixes of the metric system, such as kilo and milli, represent...
(from French Système international d'unités), is the modern form of the metric system and the world's most widely used system of measurement. Coordinated...
Additional product standards identify preferred thread sizes for screws and nuts, as well as corresponding bolt head and nut sizes, to facilitate compatibility...
Many traditional wine bottle sizes are named for Biblical kings and historical figures. The chart below lists the sizes of various wine bottles in multiples...
research (where size of treatment effect is important). Effect sizes may be measured in relative or absolute terms. In relative effect sizes, two groups are...
and military areas, metric units are used. The International System of Units (SI), the modern form of the metric system, is preferred for many uses by the...