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Nuts with specified proof load values — Fine pitch thread  7. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3.
Part 1 does not specify properties for fasteners that have head geometries that reduce the shear strength of the fastener, such as low head screws and countersunk heads. Worldwide Standards We can source any standard from anywhere in the world.
BS EN 20898-7:1995, ISO 898-7:1992
The standards do not cover fasteners that would otherwise apply but require special properties, such as weldability or corrosion resistance. Accept and continue Learn more about the cookies we use and how to change your settings.
It defines properties for sizes M1. Bolts, screws and studs with specified property classes — Coarse thread and fine pitch thread  2. With exception to part 7, which defines test standards, the parts of lso standard define properties for fasteners made of carbon steel and alloy steel. Tests have shown that the torques can also be used for bolts and screws with thread tolerances 6f and 6e. Also since bolts and screws with threads greater than M3 LID to anproximately Ml0 often cannot be subjected to a tensile test or proof load test due to their short lengths, minimum, breaking torques have been specified for bolts and screws Ml to Ml0 ineluding the fine pitch threads M8 x 1: At the time of publication, the edition indicated was valid.
The properties 8898-7 defined for M1.
The minimum breaking torques have been determined on the basis of cross-sections resulting from the minimum values of the minor diameter of the thread tolerance 6g. Each member body interested in a subject for which a technicai committee has been established has the right to be represented on ido committee. Bolts, screws and studs Part 2: ISO – Mecha It also excludes set screwswhich are covered under part 5.
Figure 1 is only an example of a suitable test device.
From Wikipedia, the free encyclopedia. Nuts with specified proof load values — Coarse thread .
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Views Read Edit View history. Torsional test and minimum torques for bolts and screws with nominal diameters 1 mm to 10 mm.
Nuts with specilied proof load values – Coarse thread Part 5: 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.
Clamp the bolt or screw into the test device over at least two full threads, having a free thread length of at least one thread diameter present between the head of the bolt or screw and the threaded insert see figure I. Torsionsversuch und Mindest-Bruchdrehomomente fuer Schrauben mit Nenndurchmessern 1 mm bis 10 mm. Mechanische Eigenschaften von Verbindungselementen. Learn more about the cookies we use and how to change your settings. Take the smart route to manage medical device compliance.
Set screws and similar threaded fasteners not under tensile stresses . Click to learn more. Find Similar Items This product falls into the following categories. Set screws and similar threaded fasteners not under tensile stresses Part 6: You may experience issues viewing this site in Internet Explorer 9, 10 or The test applies to bolts and screws with thread less than M3 for which no breaking and proof loads are indicated In IS0as well as to short bolts and screws with nominal diameters 3 mm to 10 mm which cannot be subjected to a tensile test.
Apply the torque in a continuously increasing manner. The work of preparing International Standards is normally carried out through IS0 technical committees. Part 5 defines the mechanical properties for set screws and other fasteners not under tensile stresses. Mechanical properties of fasteners.