M6 x 20mm Metric Hex Socket Countersunk Flat Head Screw Bolts 20PCS Drive Type: Hex Socket; Head Style: Flat Head; Material: 304 Stainless Steel Package Content: 20 x Countersunk Bolts; Product Name: Countersunk Bolt; Thread Size: M6 x 16mm(D*L) Weight: 83g; Main Color: Silver Tone Thread Pitch: 1mm; Total Length: 20mm/ 0.8" Head Size: 12 x 4mm/0.47" x 0.16"(D*T); Width Across Flat (S): 4mm/ 0.16"