... .Surface:Galvanized 3.Standard:GB,ADSI,DIN,JIS,SP,ISO 4.Welcom:OEM Stainless Steel U BoltWelcome OEMNonstandeard U bolt widely used for fastening in ... .2.Surface:Galvanied,Dacromet Zinc,HDG,Mechanical plating,etc.3.Diameter: 3-20mm4.Standard:GB,ADSI,DIN,JIS,SP,ISO, Stainless Steel U Bolt