M6 x 55mm Phillips Flat Head Countersunk Bolts Machine Screws 6 Pcs Head Style: Flat Head; Material: Metal; Package Content: 6 x Countersunk Bolts Product Name: Countersunk Bolts; Thread Size: M6 x 55mm(D*L); Weight: 64g Drive Type: Phillips; Main Color: Silver Tone; Thread Pitch: 1mm Total Length: 58mm/2.3"; Head Diameter: 13mm/0.5" Head Height: 2mm/0.08"; Phillips Size: 5mm