#14 x 3-1/4" Reamer Tek Screws - They are used to secure wood to mild steel or aluminum and these deep, wide and sharp threads provide maximum holding power (no pre-drilling in most applications). Trailer Deck Screws - Manufactured from high quality heat treated steel. Coated with the bronze star triple ceramic coating for superior exterior protection. Self-Tapping Wood to Metal Screws - ACQ pressure treated lumber compatible and corrosion resistant. Self-Drilling wings bore through wood and then break off once they contact the steel or aluminum. The screws use torx/star drive T-30. torx/star drive delivers twice the torque of phillips or square drive tek screws. #14 x 3-1/4" reamer tek screws manufactured by UYZO after 1200 Hours of salt spray testing without failures. #14 x 3-1/4" Reamer Tek Torx/Star Head Self-Tapping Wood to Metal Screws - Tek Screws for Flatbeds, Trailers, or for Fastening Wood to Steel - T-30 Torx Screw Head (50 Pcs)
Maximum Wood depth ~2-1/8" - Maximum Metal Thickness Screw Can Bore ~1/4" - Use Torx/Star Bit T-30.
Dimensions: 0.461" Head Width - 3-1/4" Total Length - 0.24" Shank Diameter - Torx /Star Bit Not included.
Reamer Tek screws are used to secure wood to mild steel or aluminum - NOT use For Welded Seams or Tempered Metal.
They are designed for trailer decks, truck beds, docks, horse trailers, utility trailers, ATV trailers, etc.
Note：Keeping the speed low and not pushing too hard was super important.