M4x30mm Hex Socket Machine Screw Countersunk Round Head Bolts 30PCS Drive Type: Hex Socket; Head Style: Round Head; Material: 304 Stainless Steel Package Content: 30 x Countersunk Bolts; Product Name: Countersunk Bolt; Thread Size: M4 x 30mm(D*L) Weight: 81g; Main Color: Silver Tone Thread Pitch: 0.7mm; Total Length: 32mm/ 1.4" Head Size: 8 x 2mm/0.3" x 0.08"(D*T); Width Across Flat (S): 2.5mm/ 0.1"