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Stainless Steel Bi-Metal Screws
The unique design of stainless steel bi-metal self-drilling screws or Tek screws, which combines a specific point akin to a drill bit composed of hardened carbon steel, allows them to drill through stainless steel sheets.
The remaining screws are made of stainless steel, and a silver sliding coat is applied to preserve the entire screw.
This coating lowers the screw-in resistance while simultaneously providing more corrosion protection. One can use these screws up to two sheets of 1.00 mm stainless steel with 2.00 mm total thickness. The 304 screws are made to survive a long period without corroding. The hardened tip cuts through the steel.
It is a far better choice than a screw made of carbon steel or a 410 stainless steel screw, which are both susceptible to corrosion.
Allfasteners bi-metal screws has revolutionised metal manufacture by simultaneously drilling (1), shaping the thread (2), and tightening (3), all while saving time and providing a durable solution.
Make the Right Choice
The superior corrosion resistance of 300 series stainless steel and the drilling capabilities of carbon steel self-drilling screws are combined in Allfasteners Bi-metal screws.
The stainless steel shank of each bimetal screw is fused to a hardened, self-drilling carbon steel drill tip.
If your operation involves chemicals, Allfasteners Bi-metal screws are the ideal option for industrial and coastal applications.
The three benefits of this design are as follows: (1) corrosion resistance on the stainless shank; (2) self-drilling through rigid metal sheet up to 12 mm; and (3) drilling, tapping, and fastening in one shot. In addition, the stainless steel material on the shank is kept from becoming sensitised by the induction heat treatment applied at the drilling point.
Bi-Metal Screws: Types and Applications
Bi-Metal Wing Tek Screw: The purpose of bi-metal wing tek screws is to secure wood to aluminium substrates without the need for pre-drilling holes. They have a welded, hardened carbon steel drill point with sharp drill points. Bi-metal wing screws offer remarkable corrosion resistance because they are made of stainless steel and electro-zinc plated, although tiny pilot holes can be drilled to speed up insertion.
Stitching Bi-Metal Screw: These self-drilling screws with a tapered shank are made for sewing sheet metal without the need for pre-drilling. They operate well because they have bonded washer seals and a hexagon-shaped head. The SS304 or SS316 screw body's corrosion resistance is dependable and long-lasting thanks to the bimetal screws.
Light Guage Bi-Metal Screw: In the steel roofing and cladding work, light-gauge self-drilling screws with #2 or #3 drill tips are widely used as the primary means of fastening sheets to steel purlins (less than 6mm). Because of their heated carbon steel drill tip, bi-metal screws may drill through steel purlins without the requirement for pre-drilled holes.
Heavy Guage Bi-Metal Screw: Sheets up to 12 mm thick are fastened to solid gauge steel purlins using heavy-gauge self-drilling screws. The drill tip size is the main factor that separates heavy-gauge and light-gauge self-drilling screws. The #4 or #5 drill tips on heavy-gauge self-drilling screws make it easier to drill through thicker purlins.
Composite Panel Bi-Metal Screw: The primary purpose of composite panel fastening screws is to fasten composite panel sheets to cold-rolled rails and purlins. These screws' high threads give the top of the sheet extra support, which improves stability all around. Pre-drilling is not necessary with this kind of screw fitting, which speeds up the installation procedure.
All Stock, In Stock, at Allfasteners
To attain the ideal hardness for the drill tip, Allfasteners uses high-frequency heat treatment procedures, guaranteeing outstanding performance in a range of drilling applications.
Our different styles of drill tips are intended to fulfil distinct drilling specifications for metal sheets with thicknesses ranging from 1 to 12 mm. The 12mm purlins or thin metal sheets that your project requires, Allfasteners' Bi-metal screws are designed to be precise and effective.
Discover the variety of our bi-metal screws designed to meet your specific drilling requirements. Examine the drill tip specifications attached to learn more about each variation. You can rely on Allfasteners to deliver dependable solutions for your metalworking needs.
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Enquiries? Talk to the experts at Allfasteners today.