... Benz,Nissan,Man,BPW,etc 2.Size:M27*92*L 3.Shape:flat semi-round 4.Grade:Ordinary Standard,10.9 5 ... ,24mm,27mm,30mm,etcThread pitch1.5mm,1.75mm,2.0mm,3.0mmMaterialmild steel,45#steel,35#steel,40Cr steel,etcHigh quality ... strengthgrade8.8,9.8,10.9shaperound,flat round,half-round,square,flat half-round, flat square Surface protection bake paint, black oxide ...