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  • BSI
    BS EN ISO 898-3:2018+A1:2021 Fasteners. Mechanical properties of fasteners made of carbon steel and alloy steel - Flat washers with specified property classes
    Edition: 2021
    $435.35
    / user per year

Description of BS EN ISO 898-3:2018+A1:2021 2021

This document specifies mechanical and physical properties of flat washers, designed to be used in bolted joints in combination with bolts, screws, studs and nuts with a specified property class in accordance with ISO 898‑1 and ISO 898‑2.

NOTE 1 These types of washers can also be used with other fasteners such as screws forming their own mating thread.

Washers that conform to the requirements of this document are evaluated at an ambient temperature range of 10 °C to 35 °C. They might not retain the specified mechanical and physical properties at elevated temperatures and/or lower temperatures.

NOTE 2 Washers conforming to the requirements of this document are used in applications ranging from −50 °C to +150 °C. Users are advised to consult an experienced fastener expert for temperatures outside this range and up to a maximum temperature of +300 °C when determining appropriate choices, or for critical applications.

This document is applicable to the following flat captive and non-captive washers made of carbon steel or alloy steel, with thickness from 0,2 mm to 12 mm:

  • plain washers (with or without knurls, ribs or chamfers);

  • square washers;

  • square hole washers;

  • shaped plates.

It does not specify requirements for the following properties:

  • corrosion resistance;

  • weldability.



Standard NumberBS EN ISO 898-3:2018+A1:2021
TitleFasteners. Mechanical properties of fasteners made of carbon steel and alloy steel - Flat washers with specified property classes
StatusDefinitive
Publication Date2021-06-24
ReplacesBS 4320:1968
Identical National Standard OfEN ISO 898-3:2018/A1:2021, ISO 898-3:2018/Amd.1:2020
AmendsBS EN ISO 898-3:2018
DescriptorsThread pitch, Symbols, Surface properties, Elongation at fracture, Specimen preparation, Proof loading, Temperature, Mechanical properties of materials, Chemical composition, Dimensional changes, Fasteners, Testing conditions, Test equipment, External-thread fasteners, Approval testing, Test specimens, Decarburization, Bolts, Designations, Unalloyed steels, Mechanical testing, Compositional tolerances, Tensile testing, Screws (bolts), Marking, Angles (geometry), Studs (fasteners), Impact testing, Alloy steels, Hardness, Tensile strength, Physical properties of materials, Dimensions, Yield stress, Hardness testing, Tempering, Steels
ICS21.060.20 Nuts
CommitteeFME/9
ISBN978 0 539 06711 8
PublisherBSI
Pages28

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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