{"product_id":"hex-washer-self-drilling-tek-screws-400-pack-410-stainless-8-10-12","title":"Hex Washer Self-Drilling Tek Screws, 400-Pack, 410 Stainless Steel, #8 #10 #12, 1\/2\"–2\"","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eHex Washer Self-Drilling Tek Screws — 400-Piece Kit, Three Sizes, One-Step Fastening\u003c\/h2\u003e\n    \u003cp\u003eStopping to pre-drill pilot holes on a metal roofing or framing job costs time and money. This 400-piece hex washer head self-drilling screw kit eliminates that step entirely — the hardened drill-point tip bores through sheet metal and taps its own threads in a single pass, letting contractors and serious DIYers drive faster without sacrificing holding strength.\u003c\/p\u003e\n    \u003cp\u003eAll screws are manufactured from 410 stainless steel (natural finish, no plating to wear off), covering three Imperial diameters — #8 (~4.2 mm), #10 (~4.8 mm), and #12 (~5.5 mm) — across lengths from 1\/2″ to 2″. The hex washer head acts as an integrated load-spreading flange, driven with a standard 5\/16″ or 3\/8″ hex socket for high-torque, cam-out-free installation. Kit contents: #8×1-1\/2″ (80), #8×3\/4″ (80), #8×1″ (60), #10×1\/2″ (60), #10×3\/4″ (40), #10×1″ (30), #12×3\/4″ (25), #12×1-1\/2″ (15), #12×2″ (10), supplied in a compartmented storage box.\u003c\/p\u003e\n    \u003cp\u003eIdeal for metal roofing panels fastened to timber purlins, HVAC ductwork and steel-stud framing, auto body and panel work, wood-to-metal structural connections, and general construction and maintenance tasks where a reliable, high-strength self-drilling fastener is required.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003e✅\u003c\/span\u003e\n    Compatible with sheet metal up to ~2 mm, thin-gauge steel studs, wood substrates, and select plastics — suitable for roofing, HVAC, framing, automotive, and general construction\n  \u003c\/div\u003e\n\n  \u003cdiv\u003e\n    \u003ch2\u003e✅ Key Features of These Hex Washer Self-Drilling Tek Screws\u003c\/h2\u003e\n    \u003cul class=\"hdiy-features\"\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🚀\u003c\/span\u003e\n        \u003cspan\u003e\u003cstrong\u003eSelf-Drilling Tip — No Pilot Hole Required:\u003c\/strong\u003e The hardened drill-point bores through sheet metal up to ~2 mm and taps its own mating threads in one step, eliminating a separate drilling operation on most substrates.\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n        \u003cspan\u003e\u003cstrong\u003e410 Stainless Steel, Natural Finish:\u003c\/strong\u003e Higher strength and hardness than 304 SS, with solid atmospheric corrosion resistance indoors and outdoors. No plating to chip or wear off — corrosion protection is built into the alloy.\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\n        \u003cspan\u003e\u003cstrong\u003eHex Washer Head — Integrated Load Spreader:\u003c\/strong\u003e The wide washer flange distributes clamping force to prevent pull-through in thin metal, while the external hex drive accepts a standard socket or nut driver for high-torque, cam-out-free installation.\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\n        \u003cspan\u003e\u003cstrong\u003e400-Piece, 3-Diameter Kit (#8, #10, #12):\u003c\/strong\u003e Nine size combinations covering 1\/2″ to 2″ lengths — the most commonly specified Tek screw range for roofing, framing, and HVAC work — all in one organized storage box.\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🧲\u003c\/span\u003e\n        \u003cspan\u003e\u003cstrong\u003eCompartmented Storage Box Included:\u003c\/strong\u003e Each size is separated into its own compartment so you can grab the right screw instantly without sorting through loose hardware on the job site.\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🏗️\u003c\/span\u003e\n        \u003cspan\u003e\u003cstrong\u003eBroad Application Range:\u003c\/strong\u003e Metal roofing, HVAC ductwork, steel-stud framing, auto body panels, wood-to-metal connections, shed construction, and general maintenance — one kit covers the majority of self-drilling fastener needs.\u003c\/span\u003e\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-list\"\u003e\n    \u003ch2\u003e📦 What's in the Box\u003c\/h2\u003e\n    \u003cul\u003e\n      \u003cli\u003e#8 × 1-1\/2″ Hex Washer Self-Drilling Screws × 80\u003c\/li\u003e\n      \u003cli\u003e#8 × 3\/4″ Hex Washer Self-Drilling Screws × 80\u003c\/li\u003e\n      \u003cli\u003e#8 × 1″ Hex Washer Self-Drilling Screws × 60\u003c\/li\u003e\n      \u003cli\u003e#10 × 1\/2″ Hex Washer Self-Drilling Screws × 60\u003c\/li\u003e\n      \u003cli\u003e#10 × 3\/4″ Hex Washer Self-Drilling Screws × 40\u003c\/li\u003e\n      \u003cli\u003e#10 × 1″ Hex Washer Self-Drilling Screws × 30\u003c\/li\u003e\n      \u003cli\u003e#12 × 3\/4″ Hex Washer Self-Drilling Screws × 25\u003c\/li\u003e\n      \u003cli\u003e#12 × 1-1\/2″ Hex Washer Self-Drilling Screws × 15\u003c\/li\u003e\n      \u003cli\u003e#12 × 2″ Hex Washer Self-Drilling Screws × 10\u003c\/li\u003e\n      \u003cli\u003eCompartmented Storage Box × 1\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-usecases\"\u003e\n    \u003ch2\u003e🎯 Who Is This For?\u003c\/h2\u003e\n    \u003cdiv class=\"hdiy-usecase-item\"\u003e\n      \u003cspan\u003e🏠\u003c\/span\u003e\n      \u003cstrong\u003eRoofing Contractors \u0026amp; Installers\u003c\/strong\u003e\n      \u003cp\u003eDrive through corrugated steel panels and metal roofing into timber purlins in one step — no pre-drilling, faster installation, cleaner penetrations.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hdiy-usecase-item\"\u003e\n      \u003cspan\u003e🌬️\u003c\/span\u003e\n      \u003cstrong\u003eHVAC \u0026amp; Sheet Metal Technicians\u003c\/strong\u003e\n      \u003cp\u003eSecure ductwork, brackets, and steel-stud framing quickly with hex washer screws that grip thin-gauge metal without cam-out or stripping.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hdiy-usecase-item\"\u003e\n      \u003cspan\u003e🚗\u003c\/span\u003e\n      \u003cstrong\u003eAuto Body \u0026amp; Panel Fabricators\u003c\/strong\u003e\n      \u003cp\u003eFasten auto body panels and enclosures to steel frames with a screw that self-drills cleanly and holds under vibration.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hdiy-usecase-item\"\u003e\n      \u003cspan\u003e🔨\u003c\/span\u003e\n      \u003cstrong\u003eDIY Builders \u0026amp; Maintenance Professionals\u003c\/strong\u003e\n      \u003cp\u003eKeep a full-range kit on hand for shed construction, equipment enclosures, wood-to-metal framing, and general repairs without multiple hardware store trips.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ch2\u003e📐 Technical Specifications\u003c\/h2\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eSizes Included\u003c\/th\u003e\n\u003ctd\u003e#8 (~4.2 mm) · #10 (~4.8 mm) · #12 (~5.5 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLength Range\u003c\/th\u003e\n\u003ctd\u003e1\/2″ – 2″ (varies by diameter)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eHead Style\u003c\/th\u003e\n\u003ctd\u003eHex Washer Head\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eDrive Type\u003c\/th\u003e\n\u003ctd\u003eExternal Hex Socket (5\/16″ or 3\/8″)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePoint Type\u003c\/th\u003e\n\u003ctd\u003eSelf-Drilling (Tek \/ Drill Point)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e410 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural (no plating)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMax Sheet Metal Thickness\u003c\/th\u003e\n\u003ctd\u003eTypically up to ~2 mm without pilot hole\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eTotal Quantity\u003c\/th\u003e\n\u003ctd\u003e400 pieces (9 size combinations)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eStorage\u003c\/th\u003e\n\u003ctd\u003eCompartmented plastic storage box\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-faq\"\u003e\n    \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eDo these screws require a pilot hole?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eNo. The self-drilling tip bores through sheet metal up to approximately 2 mm thick and into wood without pre-drilling. For thicker or harder steel, a small pilot hole can reduce drive torque, but in most roofing, framing, and HVAC applications these are true one-step fasteners.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eHow does 410 stainless compare to 304 or zinc-plated steel?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003e410 stainless is harder and stronger than 304, offering good atmospheric corrosion resistance for indoor and mild outdoor use. It is also magnetic. For constant saltwater or harsh chemical exposure, 316 would be preferable, but for roofing, HVAC, and general construction, 410 performs very well at a lower cost than 316.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat socket size do I need to drive these screws?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMost #8 and #10 Tek screws use a 5\/16″ (8 mm) hex socket. #12 screws may use 5\/16″ or 3\/8″ depending on the exact head size. A magnetic nut driver bit in both sizes will cover the entire kit.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eCan these be used for wood-to-metal connections?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The self-drilling tip penetrates the metal layer and the thread bites firmly into the wood substrate beneath. They are widely used for fastening metal roofing to timber purlins and for mixed-material structural connections.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these screws magnetic?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. 410 stainless steel is a martensitic grade and is magnetic, unlike austenitic grades such as 304 or 316. This is useful for retrieving dropped screws with a magnet on the job site.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eWhy does the hex washer head outperform a standard pan or flat head on thin metal?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe integrated washer flange distributes the clamping load over a larger bearing area, significantly reducing the risk of pull-through in thin-gauge sheet metal. The external hex drive also allows much higher torque than a Phillips or Torx recess without cam-out.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eHow are the 400 screws distributed across sizes?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe kit contains: #8×1-1\/2″ (80), #8×3\/4″ (80), #8×1″ (60), #10×1\/2″ (60), #10×3\/4″ (40), #10×1″ (30), #12×3\/4″ (25), #12×1-1\/2″ (15), #12×2″ (10). Total: 400 pieces.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your quantity above, then add to cart.\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"Default Title","offer_id":52248354029842,"sku":"GBTST0008","price":20.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-07_bf30b9ce-0dd4-4e50-9480-ab33b2512a6a.jpg?v=1778219169","url":"https:\/\/homediyer.com\/products\/hex-washer-self-drilling-tek-screws-400-pack-410-stainless-8-10-12","provider":"HomeDIYer","version":"1.0","type":"link"}