... -20(5). Material: 45#(6). Surface treatment: HDGPhotos for detailPhotos for PackinghCertificationRegarding to Bolts StandardDIN931,DIN933,DIN6914,ASTM A325M,ASTMA325, ASTM A-10 ... can make accroding to your drawing or your sampleRegarding to Nuts Type of NutSquare,Hex,Flange,Hex socket,T-type,Coupling ... Washers Type of WasherRound ,Square,Plat,Friction,Plate ASTM A325 NUTS AND BOLTS HARDWARE