DIN912

DIN91283■27944460023b26T■UDC621.882.215.61.091.1DEUTSCHE NORMDecember 1983Hexagon socket head cap screws(modified version of ISO 4762)912Zylinderschrauben mit Innensechskant;ISO 4762 modifiziertSupersedes September 1979 editionAs it is current practice in standards published by the International Organization for Standardization(ISO),tha commahas been used throughout as a decimal marker.Thls standard contains the main specificatlons of ISO 4762-1977,adopted in a modified form,with national addenda.These addenda are shaded grey in clauses 1 and 3 to 6.Dimensions in mm1 Field of applicationuueg"Ae Bonw.This standard specifies product grade A hexagon socket head cap screws with metric screw threads and thread diam-eters fromt 100mIf,In exceptional cases,the screws are to meet requirements other than those given inthls standard,these shall be selected in accordance with the appropriate standards.2 DimensionsPermissible alternativeform of socketPoint chamfered(herccod日nce with DIN 78籍for sizes M4,the polnt need not be chamfered2P max.Incompletethread(b)Slight rounding orcountersink permissibleat the mouthda only applies toof the socketpositive values ofBottom edge of head may berounded or chamfered to dwMaximum underheadbut shall be deburredfilletfmax 17r max.x-hm~感刘2minsee table45”mxTop head may beradiused or chamfered!In IS0 4762,the range is M 1:6 to M 36.1n年047B2 this is giyen incorreniade to ISO to rorreot this.Continued on pages 2 to 12Bouth Verla情gambH,Beriin30,ha5 oxolusive sale rights for German Standards(Dlt-州otT阳n时DIN 912 Engl.Prlce group 904.84Sales No.0109Copyright by the DIN Deutsches Institul Fur Normung B Yon Mar041315:142013