DIN7981 A2-70 Phillips Self Tapping Screws /Countersunk Head Screws

DIN7981 Phillips Self Tapping Screws with Crossed Recessed Countersunk Head/Countersunk Head ScrewsA selftapping screw is a screw that can tap its own hole as it is driven into it. For hard substrates such as  metal or hard plastics, the selftapping ability is often created by cutting a gap in the continuity of the  thread on the screw, generating a flute and cutting edge similar to those on a tap. Thus, whereas a  regular machine screw cannot tap its own hole in a metal substrate, a selftapping one can (within  reasonable limits of substrate hardness and depth). For softer substrates such as wood or soft plastics, the selftapping ability can come simply from a tip that tapers to a gimlet point (in which no flute is needed). Like the tip of a nail or gimlet, such a point forms the hole by displacement of the surrounding material rather than any chip-forming drilling/cutting/evacuating action. Products nameDIN7981 Phillips Self Tapping Screws with Crossed Recessed countersunk Head/countersunk head screwsStandard:DIN,ASTM/ANSI JIS EN ISO,AS,GBMaterialStainless Steel: SS201, SS303, SS304, SS316,SS316L,SS904L,F593Steel Grade: DIN: Gr.4.6,4.8,5.6,5.8,8.8,10.9,12.9;  SAE: Gr.2,5,8;  ASTM: 307A,307B,A325,A394,A490,A449,FinishingZinc(Yellow,White,Blue,Black),Hop Dip Galvanized(HDG),Black Oxide,Geomet,Dacroment,anodization,Nickel plated,Zinc-Nickel platedProductionProcessM2-M24:Cold Froging,M24-M100 Hot Forging,Machining and CNC for Customized fastenerCustomized ProductsLead timeBusy season:15-30days,Slack seaon:10-15daysStock ProductsSteel:4.8Grade DIN6923,8.8Grade 10.9Grade of GB5783 and GB5782Stainless steel: All DIN Standard stainless steel BoltFree Samples for standard fastenerFor more information visit:hainafastener.en.made-in-china.comService         Professional Manufacturer: All of our Fastener are designed and manufactured according to buyers' specification and performance.         Quality is guaranteed: Durability testing and critical technical design to enhance fasteners lifetime.         Cost effective: Competitive prices with factory directly supply         Perfect fastening solution with 20 years experiences to solve your problem: Wide range of parts selection.         Customized Ideal Fasteners: customized services according to the samples and drawings offered.         If you are not sure about what exactly you need -  feel free to contact us anytime and get professional assistance from us.   /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1