Truss Head Phil Self-Drilling Screw 1.Name:Truss Head Phil Self-Drilling Screw 2.Material: steel 3.Diameter: 4.2mm Truss ... Head Phil Self-Drilling Screw 1) Standard: DIN, ANSI, ISO, GB2) Material: ... : 13-75mm5) Slot: phil6) Head: truss7) Thread: UNC, UNF8) Point: self-drilling9) Finish: plain, zinc, black phosphated, grey phosphated,galvanized10) Packing ...