din-914-vints参考标准资料

UDC621.882.219.4.092.5December 1980Hexagon socket set screws with cone point四ISO 4027 modified914Gewindestifte mit Innensechskant und Spitze,ISO 4027 modifiziertAs it is current practice in standards published by the International Organization for Standardization (ISO],the commahas been used throughout as a decimal marker.This standard includes all specifications of International Standard ISO 4027-1977,but is amended for nationalpurposes.The parts amended are marked by shaded areas.At this point in time it has not been possible to adopt ISO 4027 as a DIN ISO Standard without modifications becausesome ISO basic standards which are not yet availabile have to be replaced by national standards.Furthermore ISO 4027does not cover sizes M 1,4,M 1.8,M 14,M 18 and M22 as well as some intermediate lengths which are required fornational purposes.Dimensions in mm1 Field of applicationISO 4027 specifies product grade A hexagon socket set screws with cone points with metric dimension and threaddiameters from 1,6 up to and including 24 mm.If,in special cases,specifications other than those listed are required,these shall be selected from existing InternationalStandards,for example ISO 261,ISO 888,ISO 898,ISO 965,ISO 3506.In Germany the following standards apply additionally:DIN 267 Part 1 Bolts,screws,nuts and similar threaded and formed parts,technical delivery conditions,generalinformationDIN 267 Part 2 Bolts,screws,nuts and similar threaded and formed parts,technical delivery conditions,types anddimensional accuracyDIN 267 Part 5 Bolts,screws,nuts and similar threaded and formed parts,technical delivery conditions,testing andacceptanceDIN 267 Part 6 Fasteners,technical delivery conditions,type and dimensional accuracy for product grade FDIN 267 Part 9 Fasteners,technical delivery conditions,electroplated coatingsDIN 267 Part 11 Fasteners,technical delivery conditions,stainless steel partsDIN 267 Part 18 Fasteners,technical delivery conditions,parts made of non-ferrous metals2Dimensions and designationAnother permissible shape900r120°*)of the bottom of the hexagon90to120°incomplete threadRounding or countersink at themouth of the socket is permissibleDesignation of a hexagon socket set screw with thread size d=M6,nominal size!=12 mm and strength category 45H:Set screw DIN 914-M6 X 12 -45HSet screws up to M2,5 may also be ordered in product grade F according to DIN 267 Part 6.In this case the letter Fshall be added to the designation,e.g.Set screw DIN 914-M2X 4-45H-F.If set screws in other strength categories (hardness categories)according to DIN ISO 898 Part 5 are required,the cor-responding symbol must be indicated in the designation,e.g.Set screw DIN 914-M6 X 12-22H.For"1and·")see page2Continued on pages 2 to 4Explanations on page 5147