... 35CrMoA, 42CrMoA, 25Cr2MoVA, 35VB, 40CrNiMo,Stainless steel and so onSizeM6-M42 LengthM16-300Type of headSquare,Hex,Flange ... ,Zinc plated,hot dip galvanized,Dacrotizing plated and your requirementOthersWe can make accroding to your ... drawing or your sampleRegarding to Nuts Type of NutSquare,Hex,Flange,Hex socket, ... of manufacturing fasteners DIN6914/6915 Hex Nuts M12-M33 Bolt and Nut