8-18 x 5/8" HWH Steelbinder self-drilling pole barn screws are designed for general metal to metal construction applications. This includes HVAC, roof deck to steel framing, and roof clips to steel framing. The Drill Point is designed to penetrate a wide variety of metal thicknesses from thin sheet metal to 0.250" with no "point walking". These Hex Washer Head screws come without a bonded sealing washer.