6mm x 40mm Male Thread Hexagon Head Self Tapping Screws 20 Pcs Head Style: Hex Head; Material: Carbon Steel; Package Content: 20 x Self Tapping Screws Product Name: Self Tapping Screw; Thread Size: 6mm x 40mm/0.24" x 1.6"(D*L); Weight: 151g Drive Type: Hex Socket; Main Color: Black; Overall Size: 46mm/1.8"(length) Pitch: 2.5mm; Head Diameter: 9mm/0.35" Head Height: 6mm/0.24"; Hex Width: 5mm/0.2"