... needMaterial 45#, 40Cr, 35CrMoA, 42CrMoA, 25Cr2MoVA, 35VB, 40CrNiMo,Stainless steel and so onSizeM6-M42 LengthM16-300Type of headSquare,Hex,Flange,Hex ... chooseSurface treatmentBlack Oxide,Zinc plated,hot dip galvanized,Dacrotizing plated and your requirementOthersWe can make accroding to your drawing or your ... Delivery6) We have 10years experience of manufacturing fasteners THREAD ROD STUD BOLT DIN975