iexcell 25 Pcs 5/16-18 x 1" Alloy Steel 10.9 Grade Hex Socket Button Head Cap Screws Bolts Kit, Black Oxide Finish

✔ Includes 25 Pcs 5/16-18 x 1" Hex Socket Button Head Cap Screws , Thread Size ( Diameter ): 0.312"/7.93mm, TPI: 18 Teeth Per Inch, Thread Length: 1" / 25.40mm , Total Length ( Including Head ): 1.159"/29.44mm, Screw Head Style: Button Head, Head Diameter: 0.537"/13.64mm, Head Height: 0.159"/4.04mm; Screw Drive Style: Hex Socket Drive, Known as Internal Hex Drive, Hex Size: 3/16" ✔ Material of Screws: Alloy Steel 10B21, Black Oxide Finish to Anti-rust; Strength Grade of Screws : 10.9 Grade, Hardness: HRC 32-39, Tensile Strength: 1040 N/mm² ✔ 1 Pcs Hex Key, Hex Size: 3/16", to Drive These Screws Conveniently and Easily ✔ Material of Hex Key: Chrome-Vanadium Steel, Nickel Plated, Higher Strength, Anti-rust ✔ Package: 25 Pcs 5/16-18 x 1" Hex Socket Button Head Cap Screws and 1 Pcs Hex Key Come In Plastic Storage Case, Organized Conveniently and Easily