20 TEK SCREWS SUPER WING DRILL - HEAVY SECTION Super Wing Drill Countersunk Tek 7 For 4mm - 18.5mm Steel TECHNICAL EUROPA EN 14566 2008 = 01DW-01/14 Countersunk Head Tek 7 Designed For: When timber is being fastened to thicker steel section or where extremely hard steels defeat normal tek screws Head Style: Double Countersunk Drive: Torx 30 Thread Form: 24 threads per inch fine thread, ‘V’ fluted Drill Point: Tek 7 spiral point Shank Material: Carbon steel Material Grade: AISI C1022 Coating: 1,000hr Evoshield® Recommended Drill Speed: 1,500 - 2,500 RPM Steel Thickness: 4.0mm - 18mm 2002/95/EC