?METRIC FLANGE BOLTS ASSORTMENT KIT?:272Pcs Flange Hex Bolts,Pitch: m6 x 1.0 bolt, m8 x 1.25 bolt,m10 x 1.5 bolt,Finish: Black Zinc Plated,Include 10 Sizes, M6 x 12/16/20/25/30mm, M8 x 16/20/25/30mm,M10 x30mm with flange lock nuts and washers.Full Thread,meet various needs. ?ZINC-PLATED STEEL?:M6 bolt M8 bolt,M10 bolt ,10.9 grade alloy steel and High quality materials that are resistant to corrosion, This can help to prevent rust and other forms of corrosion. ?REDUCED VIBRATION?:Flange Design,wider surface area than standard bolts, which helps to distribute the load more evenly. prevent damage to the surface being fastened and provide a more secure hold. ?WIDE RANGE OF USES?: Flange bolts can be used in a wide range of applications, from construction and automotive to industrial and marine. Such as mechanical equipment, automotive, industrial equipment and construction structure,making it easy to find the right bolt for your specific needs.