The thread form of wood screws or sheet metal screws are made for this application. Coarse, deep threads into a properly sized, predrilled hole to prevent splitting will offer the best pull out strength for this material. Larger diameters will have larger pull out numbers all else being equal (it never is)
Tapping screws, especially Type A, are referred to as "sheet metal screws" because one of their first applications was in ventilation ducts made of sheet metal. Over time, though, different types evolved. We'll cover the common groups: thread forming, thread cutting, thread rolling and self drilling. application and installations. Self-drilling screws are able to penetrate thin sheet metal through 1/2" thick steel. SELF-DRILLING SCREWS The information and data contained on this page is current as of publication date. Stalgard Coating for Induction Heat-Treated Fasteners • Proven, outstanding corrosion resistance for most
Self-drilling or self-tapping metal screws increase productivity by reducing the number of steps required to screw together pieces of metal. A self-drilling screw has a chisel tip similar to a drill bit. This allows you to skip pre-drilling a hole into thinner gauges of sheet metal. Recommended Driving Speed: For drilling fasteners #12 through #18 use an electric screw gun with a depth sensing nose piece @ 2,000 RPM maximum. Self-tapping fasteners carbon & 410 stainless @ 2,000 RPM maximum and 300 stainless @ 800 RPM maximum. Fastener Strength. Pull Over Values. Pull Out Values. Shear Values The term "self-tapping" describes the screw's ability to drill a pilot hole, which is also known as "tapping" a material. Self-tapping screws are ideal for drilling into metal and other hard materials, but are not useful for soft materials — such as wood — that require the screw to force a path into the material for increased holding ...
Used to attach plywood or particle board to 12-16 gauge steel. The wings bore a hole in the wood greater in diameter than the major diameter of the screw. As the point of the fastener enters the metal, the wings are broken off, allowing the fastener to tap into the metal. When using self-tapping screws on aluminium choose a self-tapping screw with a drill like point and sharp cutting blade threads that go down the whole length of the screw. These self-tapping screws are designed to keep thin metal from denting. To use self-tapping screws, place the screw directly on the aluminium sheet. Self Tapping Screws - A fastener that can tap its own threads. All GRABBER® drywall screws are self tapping. FASTENER POINTS Auger Point - A knurled thread used to ream out material to reduce driving torque in hard materials. GRABBER® Point - Coarse thread screws with super-sharp points, designed for wood-to-wood applications. Self-Drilling Screw Fasteners. This recognition was based on a comprehensive and rigorous independent evaluation of Hilti’s Self-Drilling Screw Fasteners to the latest IBC code requirements in ICC-ES AC118 Acceptance Criteria for Self-Tapping Screw Fasteners, as well as the AISI S904 and AISI S905 test standards.