Philips Drive Truss Washer Head Drilling Screw a) Material: Carbon Steel b) Dia, #6-#14, Len,1/ ... about about quantity or any question. Modified Truss Head Self Drilling Screw, Self Drilling Tek Screw, Truss Washer Head Self Drill ScrewSpecification Self Drilling ... , A TypeHead CodeHex Head, Pan Head, Flat Head, Wafer Head, Truss Head, Pan Frame HeadDrive CodePhillips, Pozi, SlottedGrade4.8, 6.8 ...