Use the #14 x 2 in. Zinc-Plated #3 Use the #14 x 2 in. Zinc-Plated #3 hex Washer Self-Drilling Screws (1 lb.-Pack) for heavy-gauge metal attachments. The screws feature steel construction for strength. Use self - drilling screw store fasten materials to aluminum or sheet metal up to 7 ga. without the need of a pilot hole. The tip size is designated 1 through 5 to indicate the thickness of sheet metal the screw hererate. When selecting a self drilling screw , consider the type of point required for the application, system of measurement, thread size, material and coating, compatible materials, head style, and drive style. Steel and stainless steel self drilling screws heremon; however, other material types may be available.

Home Screws Self Drilling Screws ; Self Drilling Screws . Also known as TEK Screws , Drill -Bit Points Eliminate Pre- Drilling . Unless 18-8 Stainless is specifically required, Fastener heremends using 410 Stainless Steel for corrosion-resistant Self-Drilling Screws . 410 Stainless Steel Screws are heat-treated and hardened, which allows them to drill … These self-drilling screws are designed for use in soft steel or other metals. Self - drilling screw points are numbered from 1 through 5, the larger the number, the thicker metal it can go through without a pilot hole. A 5 point can drill a … Shop our selection of Steel, Metal, Self-Drilling Screws in the Hardware Department at The Home Depot.

Self-Drilling Screws , also known as Tek screws , eliminate the need for a pre-drilled hole. When selecting a self - drilling screw design, 3.6.1 Self-Drilling Screw Fastener Selection and Design Screw Fastening Systems 156 Hilti, Inc. (US) . a self - drilling screw should have at least 1/4 of threads. It is helpful, but not critical, that the threads also engage in the . Plated Screws Hilti Kwik-Flex Hilti Self-Drilling Screws with Kwik-Cote or Kwik- Self Drilling Screws Also Known as TEK Screws , Drill Point, Self Drillers and Self Tapping. Self Drilling Screws are used primarily when fastening into steel or other metals and are typically used to join materials like sheet metal.

Some self -tapping screws are also self - drilling , which means that, in addition to the tap-like flute in the leading threads, there is also a preliminary drill -like fluted tip that looks much like the tip of a center drill .