cross framing pan head self tapping screw material: 1022A Diameter: 3.5mm(#6),3.9mm(#7),4.2mm(#8) cross bugle headmaterial: 1022A medium carbon steel, hardenCoarse thread, pan head screw for general purpose interior wood applications Diameter: 3.5mm(#6),3.9mm(#7)Length: From 9.5mm to 13mm Coating: Black Phosphated,Zinc coated

cross bugle head self drilling screw