New 1/4" Indent Hex Washer Head UnSlotted Self-Drilling Sheet Metal Screws with a #3 Point. Diameter : 1/4" (#14) / 0.250" Thread Pitch : 14 Length : Please select from drop down menu above. Drive : External Hex, 3/8" Material：410 Stainless Steel Type : Sheet Metal Screw, Self-Drilling System of Measurement : Inch / US Width Across Flats : 3/8" (Hex Drive size)