{"title":"Heavy Self Drilling Screws","description":"\u003cp\u003eWhere you need to fix into thick-section steel without pre-drilling or tapping, a \u003cstrong\u003eheavy self-drilling screw\u003c\/strong\u003e - also known as a Tek screw or self-drilling metalwork screw - is the right fastener for the job. At the \u003cstrong\u003eDIY Hardware Store\u003c\/strong\u003e, our heavy self-drilling screws are available for the structural steel fabrication, metal roofing, and heavy-gauge sheet metal applications that require a fastener capable of drilling its own hole and forming its own thread in one operation.\u003c\/p\u003e\n\n\u003cp\u003eHeavy self-drilling screws feature a drill-point tip (the Tek point) that cuts through the steel substrate before the screw thread engages. The drill point must be matched to the combined material thickness it needs to penetrate - light Tek points for thin sheet; heavier, longer drill points for thicker sections. Using a drill point too light for the material results in the thread engaging before the hole is complete, causing the fastener to seize and potentially break. Available in hex washer head and pan head configurations, in zinc-plated and organic-coated finishes at the DIY Hardware Store.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eDrill point tip - self-drilling without pre-drilling\u003c\/li\u003e\n\u003cli\u003eSuitable for thick-section steel without tapping\u003c\/li\u003e\n\u003cli\u003eMatch drill point class to combined material thickness\u003c\/li\u003e\n\u003cli\u003eHex washer head and pan head configurations\u003c\/li\u003e\n\u003cli\u003eZinc-plated and organic-coated finishes\u003c\/li\u003e\n\u003cli\u003eUsed in structural steel fabrication and metal roofing\u003c\/li\u003e\n\u003c\/ul\u003e","products":[{"product_id":"self-drill-screw-with-epdm-washer-heavy","title":"Self Drilling Screw c\/w\/ EPDM Washer (Heavy) (Sold as singles)","description":"\u003cp\u003eFor robust and watertight fastening in heavy section metal applications, choose our Self Drilling Screws with EPDM Washer. These high-performance screws are engineered to penetrate thicker steel sections without pre-drilling, saving significant time and effort. The integrated EPDM washer creates a superior seal, offering exceptional protection against water ingress and corrosion, making them ideal for industrial roofing, cladding, and structural steelwork.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSelf-drilling for efficient installation in heavy steel.\u003c\/li\u003e\n\u003cli\u003eEPDM washer ensures a watertight and corrosion-resistant seal.\u003c\/li\u003e\n\u003cli\u003eDesigned for robust and durable fastening.\u003c\/li\u003e\n\u003cli\u003ePerfect for industrial roofing and structural applications.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"The DIY Hardware Store","offers":[{"title":"5.5x32mm","offer_id":52274151194962,"sku":"9136B","price":0.19,"currency_code":"GBP","in_stock":true},{"title":"5.5x38mm","offer_id":52274151227730,"sku":"9137B","price":0.21,"currency_code":"GBP","in_stock":true},{"title":"5.5x50mm","offer_id":52274151260498,"sku":"9138B","price":0.25,"currency_code":"GBP","in_stock":true},{"title":"5.5x65mm","offer_id":52274151293266,"sku":"9139B","price":0.27,"currency_code":"GBP","in_stock":true},{"title":"5.5x80mm","offer_id":52274151326034,"sku":"9140B","price":0.37,"currency_code":"GBP","in_stock":true},{"title":"5.5x100mm","offer_id":52274151358802,"sku":"9141B","price":0.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/6351\/2658\/files\/9136B.jpg?v=1765789002"}],"url":"https:\/\/diyhardwarestore.co.uk\/collections\/heavy-self-drilling-screws.oembed","provider":"DIY Hardware Store","version":"1.0","type":"link"}