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 Standard [WITHDRAWN] DIN EN Mechanical properties of fasteners; bolts, screws and studs (ISO ); german version EN.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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It is identical with ISO Draft International Standards adopted by the technical committees are vin to the member bodies for voting. 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.
A tensile test shall be continued until fracture occurs. Nuts with specified property classes — Coarse thread and fine pitch thread — Part 5: If marking on the unthreaded part is not possible, marking of property class only on the nut end of the stud is allowed, see Figure Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services.
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of an identical text or by endorsement, at the latest by Februaryand conflicting national standards shall be withdrawn at the latest by February B, Mn or Cr 0,15d 0,40 0, 0, 0, djn and tempered Carbon steel quenched and tempered 0,25 0,55 0, 0, 9.
The property class symbol consists of two figures: This standard supports the essential safety requirements in Annex I, clause 1. Some variables, such as straightness and thread alignment plus measurement errormay result in apparent elongation of the fasteners when the proof load is initially applied.
Marking is required for bolts and screws with nominal thread diameters d W 5 mm. The test piece shall be taken lengthwise, located as close to the surface of the bolt or screw as possible.
BS EN , ISO – Mechanical properties of fasteners. Bolts, screws and studs
The full proof load shall be held for 15 s. Table 16 — Alternative marking symbols for studs Property class 5. This third edition cancels and replaces the second edition ISO Limits of sizes for general purpose external and internal screw threads — Medium quality. In the case of small screws or when the shape of the head 208988 not allow the marking as given in Table 14 the clock face marking symbols as given 02898 Table 15 may be used.
For all property classes, if the maximum hardness is 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. Gloves or tongs shall be used to minimize measurement error. Figure 2 — Application of proof load to full-size bolts and screws 8. The Rn test HV 0,3 shall be the referee test for surface hardness testing.
BS EN 20898-1:1992, ISO 898-1:1988
Nuts with specified proof load values — Coarse thread. Nuts with specified proof load values — Coarse thread; — Part 5: This will be indicated in the amendment table on the inside front cover. Bolts, screws and studs ISO Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service.
A hardened wedge in accordance with Table 10 and Table 11 shall be placed under the head of the bolt or screw. 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. Endorsement notice The text of ISO It supersedes BS EN At the time of publication, the editions indicated were valid.
Products in property classes 4. For undated references the latest edition of the publication referred to applies. If the microscope is of a type with a ground glass screen, the extent of decarburization can be measured directly with a scale.
Mechanical properties, screws and studs EN ISO 898-1:2013
In this case the height of the non-decarburized zone E ne be at least as specified in Table 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. ISO consists of the following parts, under the general title Mechanical properties of fasteners made of carbon steel and alloy steel: BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards.
The marking is obligatory for all property classes, preferably on the top of the head by indenting or embossing or on the side ein the head by indenting see Figure 7.
The marking is obligatory for property classes 8. Torsional test and minimum torques for bolts and screws with nominal diameters 1 mm to 10 mm? Set screws and similar threaded fasteners 2089 specified hardness classes – Coarse thread and fine pitch thread ISO