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  2. List of DIN standards - Wikipedia

    en.wikipedia.org/wiki/List_of_DIN_standards

    DIN 125: Washers; medium type, primarily for hexagon bolts: Withdrawn: DIN EN ISO 7089, DIN EN ISO 7090: ISO 7089, ISO 7090: DIN 125-1: Product grade A washers – with a hardness up to 250 HV designed for use with hexagon head bolts and nuts: Withdrawn: DIN EN ISO 7089, DIN EN ISO 7090: ISO 7089, ISO 7090: DIN 125-2

  3. Washer (hardware) - Wikipedia

    en.wikipedia.org/wiki/Washer_(hardware)

    DIN (Deutsches Institut für Normung - German Institute for Standardization) standards are issued for a variety of components including industrial fasteners as Metric DIN 125 Flat Washers. The DIN standards remain common in Germany, Europe and globally even though the transition to ISO standards is taking place. DIN standards continue to be ...

  4. Nominal Pipe Size - Wikipedia

    en.wikipedia.org/wiki/Nominal_Pipe_Size

    Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...

  5. British Standard Pipe - Wikipedia

    en.wikipedia.org/wiki/British_Standard_Pipe

    British Standard Pipe (BSP) is a set of technical standards for screw threads that has been adopted internationally for interconnecting and sealing pipes and fittings by mating an external thread with an internal (female) thread.

  6. Specific weight - Wikipedia

    en.wikipedia.org/wiki/Specific_weight

    The specific weight, also known as the unit weight (symbol γ, the Greek letter gamma), is a volume-specific quantity defined as the weight W divided by the volume V of a material: = / Equivalently, it may also be formulated as the product of density, ρ, and gravity acceleration, g: = Its unit of measurement in the International System of Units (SI) is newton per cubic metre (N/m 3), with ...

  7. Flow cups - Wikipedia

    en.wikipedia.org/wiki/Flow_cups

    This measured kinematic viscosity is generally expressed in seconds of flow time which can be converted into centistokes (cSt) using a viscosity calculator. [ 2 ] Flow cups are manufactured using high grade aluminium alloy with stainless steel orifices (where indicated), flow cups are available with a range of UKAS / ISO 17025 certified ...

  8. Armourstone - Wikipedia

    en.wikipedia.org/wiki/Armourstone

    Armourstone along the sea wall south of Dawlish Warren (UK) Armourstone is a generic term for broken stone with stone masses between 100 and 10,000 kilograms (220 and 22,050 lb) (very coarse aggregate) that is suitable for use in hydraulic engineering.

  9. Knuckle thread - Wikipedia

    en.wikipedia.org/wiki/Knuckle_thread

    Knuckle threads with a flat 30 degree flank thread angle are standardized in DIN 405 for inch pitches and diameters ranging from 8 mm to 200 mm. [3] A more recent standard DIN 20400 uses metric thread pitch and lists diameters from 10 mm to 300 mm. [4] As DIN is a German organization, many instances of the DIN thread charts [5] write numbers with a comma as the decimal marker.