... , Non-standard Finish: Zinc, Plain, Black, HDG connecting rod screw: Item: connecting rod screwStandard: GB BSW, JIS, ANSI,DIN, Non-standardMaterial: carbon ... /yellow/blue/black zinc,nickle,black oxide etc. Function: Mainly used in home appliance, connect electronic products and atuo fittings.Inner ... .Pls feel free to contact us if any question! connecting rod screw