... : BS, JIS, ANSI,DIN, Non-standard Finish: Zinc, Plain, Black, HDG connecting rod screw: Item: connecting rod screwStandard: GB BSW, JIS, ANSI,DIN, Non ... -standardMaterial: carbon steel alloy steel,aluminumFinish: white/yellow/blue/black zinc,nickle,black ... .Pls feel free to contact us if any question! connecting rod screw