DIN EN 20898 1 PDF

DIN EN 20898 1 PDF

The European Standard EN has the status of a . ISO (upon which BS EN is based), altering clause 1. Standard [WITHDRAWN] DIN EN Mechanical properties of fasteners; bolts, screws and studs (ISO ); german version EN. Purchase your copy of BS EN , ISO as a PDF download or hard copy directly from the official BSI Shop. All BSI British.

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Annex ZB normative Normative references to international publications with their relevant European publications This European Standard incorporates by dated or undated reference, provisions from other publications. Table 16 — Alternative marking symbols for studs Property class 5.

Maximum hardness values have been selected for reasons other than theoretical maximum strength consideration e.

At the time of publication, the editions indicated were valid. English price group 12 www. The marking is obligatory for all property classes, preferably on the top of the head by indenting or embossing or on the side of the head by indenting see Figure 7.

Mechanical Properties – Steel Screws and Bolts ISO 898-1 EN 20898-1

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Figure 3 — Wedge loading of full-size bolts Table 10 — Hole diameters for wedge loading tensile test Dimensions in millimetres Nominal thread Nominal thread dib r1 dha r1 diameter d diameter d 3 3,4 0,7 16 17,5 1,3 3,5 3,9 0,7 18 20 1,3 4 4,5 0,7 20 22 1,3 5 5,5 0,7 22 24 1,6 6 6,6 0,7 24 26 1,6 7 7,6 0,8 27 30 1,6 8 9 0,8 30 33 1,6 10 11 0,8 33 36 1,6 12 13,5 0,8 36 39 1,6 14 15,5 1,3 39 42 1,6 a For square neck bolts, the hole shall be adapted to admit the square neck. Compliance with this standard provides one 2088 of conforming with specific essential requirements of the Directive.


Up-to-date lists and bibliographical references concerning such national standards may be dinn on application to the Central Secretariat or to any CEN member.

It presents the UK view on 11 in Europe and at the international level. Products conforming to the requirements of this part of ISO are evaluated only in the ambient temperature range and may not retain the specified mechanical and physical properties at higher and lower temperatures. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cin A is suitable for machined test pieces and for bolts with a shank area less than the stress area.


This standard has been updated see copyright date and may have had amendments incorporated. Set screws and similar threaded fasteners not under tensile stresses; — Part 6: For property class International organizations, governmental and non-governmental, in liaison with ISO, also take part in dun work. ISO is an international standard that defines mechanical and physical properties for metric fasteners.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. All properties of The full proof load shall be held for 15 s.

BS EN 20898-1:1992, ISO 898-1:1988

Principles and basic data. With exception to part 7, which defines test standards, the parts of this standard define properties for fasteners made of carbon steel and alloy steel.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by Februaryand conflicting national standards shall be withdrawn at the latest by February The chemical composition shall be assessed in accordance with the relevant ISO standards. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, page 2, the ISO title page, pages ii to iv, pages 1 to 24 and a back cover.


NOTE Careful differentiation should be made between an increase in hardness caused by carburization and that due to heat-treatment or cold working of the surface. Part 2 defines the mechanical properties for coarse threaded nuts up to an M39 size and a height of at least half the nominal diameter.

Enter the email address you signed up with and we’ll email you a reset link. Nuts dun specified proof load values — Fine pitch thread [5]. Nuts with specified proof load values — Fine pitch thread [5] 7.

Bolts, screws and nuts; — Part 2: Log In Sign Up. Various BSI electronic information services are also available which give details on all its products and services. 2898 proof load, as given in Table 7 and Table 9, shall be applied axially to the bolt in a tensile testing machine.

Hardness readings for the surface hardness shall be taken on the ends or hexagon flats, which shall be prepared by minimal grinding or polishing to ensure reproducible readings and maintain the original properties of the surface layer of the material. The work of preparing International Standards is normally carried out through ISO technical committees. Copyright Copyright subsists in all BSI publications. For the property classes 4.