DIN_7504相关标准规范

September 1995Self-drilling tapping screws瓜Dimensions,requirements and testing7504ICS21.060.10Supersedes February 1992 edition.Descriptors:Self-drilling tapping screws,tapping screws,fasteners.Bohrschrauben mit Blechschrauben-Gewinde;MaBe.Anforderungen,PrufungIn keeping with current practice in standards published by the International Organization for Standardization (ISO),a commahas been used throughout as the decimal marker.ForewordThis standard has been prepared by the NormenausschuB Mechanische Verbindungselemente (Fasteners StandardsCommittee).AmendmentsThe following amendments have been made to the February 1992 editiona)Types N.P and Q screws are no longer included.b)The standard has been editorially revised.Previous editionsDIN7504:1982-11,1992-021 Scope and field of applicationDIN 6928This standard specifies dimensions,requirements and testHexagon washer head tapping screwsmethods for heat-treated self-drilling tapping screws ('tap-DIN17210ping screws',for short).These screws have a drill point withCase hardening steel;technical delivery conditionswhich they form a pilot hole during assembly,followed byD1N50133a threaded section with which they form their mating thread,Vickers hardness testing of metallic materials:HV 0,2 toeither in a forming or in a cutting operation.See the relevantHV100DIN Standards and ISO Standards for head styles andthreads of self-drilling screws.DIN EN 10 083-1The specifications of this standard are intended to ensureQuenched and tempered steels;technical delivery con-ditions for special steelsthat tapping screws are capable of performing the abovefunctions without their own thread fracturing or becomingDIN EN 10 083-2deformed.To that end.requirements have been specifiedQuenched and tempered steels;technical delivery con-for surface hardness,drilling and thread forming capabilityditions for unalloyed quality steelsand torsional strength.DIN EN ISO 2702Heat-treated steel tapping screws;mechanical proper-2 Normative referencesties(0S02702:1992)This standard incorporates,by dated or undated reference.1S03269:1988provisions from other publications.These normative refer-Fasteners;acceptance inspectionences are cited at the appropriate places in the text and1S04042:1989the publications are listed hereafter.For dated references,Threaded components;electroplated coatingssubsequent amendments to or revisions of any of thesepublications apply to this standard only when incorporated1S07049:1983in it by amendment or revision.For undated references,theCross recessed pan head tapping screwslatest edition of the publication referred to applies.1S07050:1983DIN 962Cross recessed countersunk (flat)head tapping screwsDesignation system for fasteners(common head style)DIN4000-21s07051:1983Tabular layouts of article characteristics for bolts,Cross recessed raised countersunk (oval)head tappingscrews and nutsscrewsContinued on pages 2 to 6.318