What is a wafer TEK screw?
Ruwag Wafer Tek Screws can be used to secure IBR or corrugated sheeting to roofs. Wafer head screws are a form of self-drilling screw, which are specifically designed with drill bit points that bite into the metal, hence eliminating the time and effort involved with drilling an additional pilot hole.
What is a wafer head screw used for?
Wafer head screws are drill point fasteners for fixing drywall profiles one to the other providing a large holding surface or for accessory mountings on steel structures up to 2.5 mm thickness.
What is a #8 tek screw?
View Screws Catalog PDF. Our DR170A #8 tek screws are oval head phillips and 1 1.4″ long These screws are also self drilling and tapping.
How long should metal roof screws be?
Here are some general guidelines: Standing Seam Metal Roofing – 1” pancake heads are the most typical screws to fasten the clips. ½” Corrugated – The screw will fasten to the high of the panel in a roofing application. This panel is ½” in height, so you will need at least a 1.5” long screw.
What is a wafer head?
Wafer Head – A smaller low profile head that has many general uses. Type 17 Self drilling point for fixing timber without the need to pre-drill. Slot at end forms a cutting edge which reduces splitting of timber. Available in different finishes.
What are pancake screws?
Phillips pancake head self drilling screws are made of 410 stainless steel and have a sheet metal thread with a self driller cutting (TEK) point to pierce through 20 to 14 gauge metals. The higher the TEK number the larger the drill point to pierce heavier gauge metals.
How strong is a tek screw?
Larger Tek screws (No. 3 Tek and above) are strong enough to penetrate 12~20-gauge galvanized steel, as well as 3/8” to ½” (10~12.5 mm) structural steel and can be used on various civil and naval engineering applications.
What size TEK screw do I need?
Typically, stitching screws are 6.3mm diameter (equivalent to 14g), whereas standard tek screws are 5.5mm (equivalent to 12g). A 16mm EPDM washer is supplied with each screw, and it provides a water tight fixture for use in roofing applications.
What are bugle screws?
A bugle screw is a self-drilling screw that features a countersunk head with a flat top and a concave under-head bearing surface. This unique design enables the distribution of the bearing stress over a much wider area than is possible with a flat head screw.
What are truss head screws?
Truss head (or mushroom) screws are characterized by a low, slightly rounded surface and an extra-wide top. Truss head screws have a lower profile than other rounded head screws; thus, they can prevent tampering. Their wide head makes them suited to fasten sheet metal workpieces with large diameter holes.
What are clip screws used for?
U-clips can be used to clamp panels together, retain cables and insulation, or to provide a spring catch. They are an economical and easily reusable fastening which requires no tools.
How thick steel can Tek screws be used for?
These tek screws are commonly used in the roofing industry for fixings roofing sheets and cladding to metal substrates. They can also be used for light duty metal to metal fixing. The drill point on these will drill through 3.5mm steel, and it is important that you do not use these for anything thicker than 3.5mm.