... 4.ISO factory StandardISO,JIS,GB,ANSI,BSW,DIN or non standard as customize. MaterialCarbon steel,Stainless steel304,316, ... products are as following:Bolts: hex bolts, heavy hex bolts, hex flange bolts, carriage bolts, stud bolts, eye bolts, U bolts, masonry bolts, roofing bolts.Nuts: spring nuts ... PackageMode of TransportationThe Best Choice for You DIN 912 Grade 8.8 Black Hex Socket Screw