... nutDescription:Material:carbon steel or stainless steelAssemble:serrated hex flange nut,coned-shaped rod bolt,sleeve. .Shell type:many hole types ... diameter:6.5mm,8mm,10mm,12mm,16mm,20mm,working length from 25mm to 300mmb)Inch:Outer diameter:1/4,5/16,3 ... of the cone.A washer and flange nut are then assembled on the stud to complete the anchor.The anchor works on ...