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  2. List of DIN standards - Wikipedia

    en.wikipedia.org/wiki/List_of_DIN_standards

    ISO Metric Trapezoidal Screw Threads; Limiting Sizes for Bolt Threads from 8 to 100 mm Nominal Diameter: Active: DIN 103-8: ISO Metric Trapezoidal Screw Threads; Limiting Sizes for Bolt Threads from 105 to 300 mm Nominal Diameter: Active: DIN 103-9: ISO metric trapezoidal screw threads; gauging of external and internal threads; gauge dimensions ...

  3. Preferred metric sizes - Wikipedia

    en.wikipedia.org/wiki/Preferred_metric_sizes

    The ISO 2848 basic module is a unit of 100 mm, often represented by a single capital "M", along with 300 mm and 600 mm groupings, that is widely used for the widths of furniture in Europe. A standard metric (concrete) block is 190 mm wide, 390 mm long, and 190 mm high, which allows for 10 mm mortar joints in between bricks, giving a standard ...

  4. List of date formats by country - Wikipedia

    en.wikipedia.org/wiki/List_of_date_formats_by...

    National standard format is yyyy-mm-dd. [161] dd.mm.yyyy format is used in some places where it is required by EU regulations, for example for best-before dates on food [162] and on driver's licenses. d/m format is used casually, when the year is obvious from the context, and for date ranges, e.g. 28-31/8 for 28–31 August.

  5. Engineering tolerance - Wikipedia

    en.wikipedia.org/wiki/Engineering_tolerance

    The actual amount bigger/smaller depends on the base dimension. For a shaft of the same size, h6 would mean 10+0−0.009, which means the shaft may be as small as 0.009 mm smaller than the base dimension and 0 mm larger. This method of standard tolerances is also known as Limits and Fits and can be found in ISO 286-1:2010 (Link to ISO catalog).

  6. Metric prefix - Wikipedia

    en.wikipedia.org/wiki/Metric_prefix

    All metric prefixes used today are decadic. Each prefix has a unique symbol that is prepended to any unit symbol. Each prefix has a unique symbol that is prepended to any unit symbol. The prefix kilo- , for example, may be added to gram to indicate multiplication by one thousand: one kilogram is equal to one thousand grams.

  7. Photo print sizes - Wikipedia

    en.wikipedia.org/wiki/Photo_print_sizes

    The alternative Super series, denoted SnR, nR Plus or nR+, has an aspect ratio of 3∶2 (or as close as possible) and thus provides a better fit for standard 135 film (35 mm) at sizes of 8 inches or above. 5R is twice the size of a 2R print, 6R twice the size of a 4R print and S8R twice the size of 6R. 4D/6D is a newer size for most consumer ...

  8. IT Grade - Wikipedia

    en.wikipedia.org/wiki/IT_Grade

    From IT6 to IT18, the standard tolerances are multiplied by the factor 10 at each fifth step. This rule applies to all standard tolerances and may be used to extrapolate values for IT grades not given in Table 1. For example, the nominal size range 120 mm up to and including 180 mm, the value of IT20 is: IT20 = IT15 × 10 = 1.6 mm × 10 = 16 mm [2]

  9. List of ISO standards - Wikipedia

    en.wikipedia.org/wiki/List_of_ISO_standards

    ISO 2000 – ISO 2999; ISO 3000 – ISO 4999; ISO 5000 – ISO 7999; ISO 8000 – ISO 9999; ISO 10000 – ISO 11999; ... List of DIN standards; List of EN standards;