{"product_id":"duro-dyne-super-saber-14187-self-drilling-tapping-screw-8-18-hex-unslotted-head-steel-zinc-plated-1804","title":"Duro Dyne  Super Saber  14187 Self Drilling\/Tapping Screw, #8-18, Hex Unslotted Head, Steel, Zinc Plated","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\nSeveral common methods such as rivets, screws, and spot welding are used to fasten materials to ductwork. Three types of screws are most often used. The first is self-tapping only and requires a hole to be drilled before the screw can be utilized. The others are both self-tapping but also create their own holes. Self piercing screws have very sharp points which act much like a scratch awl in making a small opening in the steel for the threads to engage and work the sheet metal into a coned threaded hole. These work well for light gage steel. Self-drilling screws have an integral drill point which creates a large hole for tapping. This allows the screws to be used on heavy gages of steel. The maximum total thickness of steel that the self-drilling screw can be used with is determined by the drill point.\n\u003ch3\u003eItem Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCold heading quality steel wire\u003c\/li\u003e\n\u003cli\u003e0.166 to 0.161 in major dia\u003c\/li\u003e\n\u003cli\u003e0.122 to 0.116 in minor dia\u003c\/li\u003e\n\u003cli\u003eCase hardened to rockwell C52-58\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStandards\u003c\/h3\u003e\nIFI 113","brand":"Duro Dyne","offers":[{"title":"Default Title","offer_id":54441555788140,"sku":"270285161","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/0200\/7404\/files\/Duro_Dyne_14185.jpg?v=1789801065","url":"https:\/\/www.fisscosupply.com\/products\/duro-dyne-super-saber-14187-self-drilling-tapping-screw-8-18-hex-unslotted-head-steel-zinc-plated-1804","provider":"Fissco Supply","version":"1.0","type":"link"}