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UDC621.882.2/.3September 1990DINDesignation system for fasteners962Schrauben und Muttern:Bezeichnungsangaben:Formen und AusfuhrungenSupersedes December 1983 editionIn keeping with current practice in standards published by the International Organization for Standardization (ISO),a commahas been used throughout as the decimal marker.Dimensions in mm1 Field of applicationThis standard specifies a system of designation for bolts,screws,studs and nuts ('fasteners',for short).and also givessupplementary order designations for special features and finishes of such fasteners(e.g type of thread,thread end.slotting ofbolt head or nut,hardness).Where no specifications have been given for the dimensions of such features (e.g.for thread ends)the relevant standards (e.g.DIN 76 Part 1 and DIN 78)shall apply.Fasteners are not expected to conform to the designs illustrated here.The designations specified here may also be appended as supplementary information to ISO designations(cf.clause 4).2 Principle of standard designationDesignations of fasteners are to be based on the principles set out in DIN 820 Part 27 unless otherwise specified in existingstandards,modifications to which might lead to misinterpretation.A standard designation shall be made up of the following elements□-☐□×□×□×□-□-☐-□-门--□s pue6云u!senpoud jo(pajinbe)pepues ionpoud(066入Nid后3 Features3.1 General featuresGeneral features of fasteners are covered by the specifications of the relevant product standards.3.2 Special featuresWhere the fasteners ordered are to have special features,these may be designated by the symbols specified in this standardprovided that the applicability of DIN 962 has been specified in the relevant product standard and is referred to in the orderdocuments.1)For the sake of simplicity.the generic terms'bolt'or'screw'and 'nut'may be used in the standard designation instead of thefull name of the product (i.e.'bolt'instead of'hexagon head bolt'or 'nut'instead of 'castle nut'(cf.DIN 918).Continued on pages 2 to 10219
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