... , C52100, C54400, etc5. Iron: 1213, 12L14,12156. Aluminum: Al6061, Al60637.OEM according to your requestProducts Availablebolts, screws, nuts, rivets, stem nuts ... order qty) 4. Customized size and spec /OEM availablePackagesuitable for sea and air transportation or as requiredCertificateISO9001:2008 OEM/ODM precision stamping part