Bolt Hardware M6 Hex Flange Bolt Assortment 80 Piece Kit These bolts are constructed from solid steel and coated with a zinc finish to resist corrosion. With a variety of sizes included, this kit is versatile and ideal for numerous applications. Enhance your hardware selection with the Bolt Hardware M6 Hex Flange Bolt Assortment 80 Piece Kit. Includes: (20) M6x12 (20) M6x16 (20) M6x20 (20) M6x25