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 Standard [WITHDRAWN] DIN EN Mechanical properties of fasteners; bolts, screws and studs (ISO ); german version EN.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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Figure 10 — Marking of studs The symbols in Table 16 are permissible as an alternative identification of property classes. The standards do not cover fasteners that would otherwise apply but require special properties, such as weldability or corrosion resistance.

Users of British Standards should make sure that they possess the latest amendments or editions. The test piece shall be taken lengthwise, located as close to the surface of the bolt or screw as possible. Mechanical properties of fasteners made of carbon steel and alloysteel— Part don Endorsement notice The text of ISO The minimum distance from the thread run-out of the bolt to the contact surface of the nut of the fastening device shall be d.

This third edition cancels and replaces the second edition ISO Help Center Find new research papers in: The work of preparing International Standards is normally carried out through ISO technical committees. To meet the requirements of this test, the fracture shall occur in the shank or the free threaded length of the bolt, and not between the head and the shank.

If it 2898 not possible to determine the elongation after fracture due to the length of the bolt, the reduction of area after fracture shall be measured providing that Lo is at least 3 do. Table 15 — Clock-face system for marking bolts and screws Property class 3.

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

This dkn not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, dn or grade designations. For undated references the latest edition of the publication referred to applies.


The load shall be g. A British Standard does not purport to include all the necessary provisions of a contract. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested.

Enter the email address you signed up with and we’ll email you a reset link. Figure 12 — Alternative left-hand thread marking 9. After mounting, grind and polish the surface in accordance with good metallographic practice.

Mechanical properties, screws and studs EN ISO 898-1:2013

All properties of The maximum value for G and the formulae for the minimum value for E are specified in Table 3. Set screws and similar threaded fasteners not under tensile stresses. Further guidance for application of the specific property classes is given in the relevant product standards. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. It defines properties for sizes M1. For all property classes, if the maximum hardness dun exceeded, a retest shall be conducted at the mid-radius position, one diameter back from the end, at which position the maximum hardness specified shall not be exceeded.

Set screws and similar threaded fasteners with specified hardness ddin — Coarse thread and fine pitch thread — Part 6: Before and after the application of the proof load, the bolt or screw shall be placed in a bench-mounted measuring instrument fitted with spherical anvils.

Torsional test and minimum torques for bolts and screws with nominal diameters 1 mm to 10 mm?

Mechanical properties, screws and studs EN ISO – Nordic Fastening Group AB

Except as permitted under the Copyright, Designs and Patents Act no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means — electronic, photocopying, recording or otherwise — without prior written permission from BSI.

Principles and basic data. B, Mn or Cr 0,15 d 0,35 0, 0, 0, quenched and tempered Set screws and similar threaded fasteners not under tensile stresses ISO Mechanical properties of fasteners — Part 7: B, Mn or Cr 0,15d 0,40 0, 0, 0, quenched and tempered Carbon steel quenched and tempered 0,25 0,55 0, 0, 9.


If an eyepiece is used for measurement, it should be of an appropriate type, containing a cross-hair or a scale. Marking is required for hexagon and hexalobular socket head cap screws with nominal diameters d W 5 mm. The properties are defined for M1. The test for strength under wedge loading shall be carried out in tensile testing equipment described in ISO using a wedge as illustrated in Figure 3. A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions.

Table 14 — Marking symbols Property class 3. This part of ISO is applicable to set screws and similar threaded fasteners: 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.

Unless otherwise specified in the product standard, the height of embossed markings on the top of the head shall not be included in the head height dimensions. Set screws and similar threaded fasteners not under tensile stresses [4]. At the time of publication, the editions indicated were valid.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The test applies to bolts and screws with nominal thread diameters d u 3 mm as well as dun short bolts and screws with nominal thread diameters 3 mm u d u 10 mm which cannot be subjected to a tensile test. Bolts, screws and studs. The bolt or screw shall meet the requirements for minimum tensile strength, either during wedge tensile testing or in a supplementary tensile test without a wedge, according to the values given for the relevant property class before fracture occurs.

The non-notched side of the test piece shall be located near the surface of the bolt. Skip to main content.