Self Drilling Screw Echo Fasteners Base Info Model NO.:IFI, ASME, GB, ISO, DINMaterial:Carbon Steel, Stainless SteelDimension Range:St2.9-St6.3Type:Pan HeadHead Style:RoundConnection:Tapping ScrewGroove:Philips, Cross, Slotted, etc Description Pre:Electronic Screw Next:304/316 Ss Tube Fiting Equal to Swagelok