uxcell M5x30mm Roofing Hex Washer Head Self-Drilling Screws Bronze Tone 50pcs Head Style: Hex Washer Head; Material: Metal, Neoprene; Package Content: 50(+/-2%) x Self Drilling Screws Product Name: Self Drilling Screw; Thread Size: M5 x 18mm Weight: 213g; Washer Head Dia: 12mm/ 0.47" Main Color: Bronze Tone; Shaft Length(Include Tip): 30mm/ 1.2" Total Length: 35mm/ 1.4"; Hex Head Size: 8mm/ 0.3"