{"product_id":"malco-6x3-8-zip-in-self-piercing-screws-1-4-slotted-hex-washer-head-sheet-metal-screws-fast-easy-piercing-zinc-plated-1000-count","title":"Malco 6X3\/8 Zip-In Self-Piercing Screws | 1\/4\" Slotted Hex Washer Head Sheet Metal Screws  | Fast \u0026 Easy Piercing | Zinc Plated (1000 Count)","description":"\u003cdiv\u003e\n\u003cp\u003eMeet Malco Zip-In HW6X3\/8ZT — a 6 x 3\/8 inch self-piercing sheet metal screw engineered for speed, strength, and flawless joinery. With a 1\/4\" slotted hex washer head and zinc-plated finish, this bulk package is tailor-made for professionals who demand consistent results on metal roofing, ductwork, automotive body work, and fabrication projects.\u003c\/p\u003e \u003cp\u003eThe Zip-In advantage starts with its innovative thread design and meticulous heat-treating. The screw tapers to a fine, sharp point without sacrificing point strength, so you get dependable penetration from the very first turn. A single starting thread extends right to the tip, delivering piercing power in a single motion. As soon as the point bites, a second thread above the point engages to bite again, effectively drilling in double-fast and creating a solid, secure hold in one pass.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFaster driving, less effort:\u003c\/strong\u003e Dual-thread engagement means quicker penetration and fewer drive cycles, saving time on every project.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eStrong for heavier gauges:\u003c\/strong\u003e Optimized for fastening heavier gauges of sheet metal more reliably than standard self-piercing screws.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCorrosion resistance for long life:\u003c\/strong\u003e Durable zinc-plated finish protects against the elements, making it suitable for indoor and exterior applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePrecise, reliable fit:\u003c\/strong\u003e 1\/4\" slotted hex washer head provides a secure seating and consistent drive experience, helping to prevent cam-out and stripped fasteners.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile bulk value:\u003c\/strong\u003e Sold in a 1000-count package for shops and crews that run continuous installations across multiple projects.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e: auto body repairs, HVAC ductwork, roofing and siding installations, metal cabinetry, and various fabrication tasks where clean penetration and high holding power are essential. This screw shines in multi-layer assemblies where speed and reliable bite through different thicknesses are required, reducing the need for pre-drilling and minimizing field downtime.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eHow it compares to traditional self-piercing screws\u003c\/strong\u003e: Zip-In’s tapered point with a single tip thread delivers immediate penetration, while the second thread ensures rapid, secure engagement after entry. The heat-treated point maintains strength under repeated driving, letting you fasten thicker or layered sheets without sacrificing performance or increasing the risk of thread stripping.\u003c\/p\u003e \u003cp\u003eTechnical snapshot:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\u003cstrong size:\u003e 6 x 3\/8 inch\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDrive:\u003c\/strong\u003e 1\/4\" slotted hex washer head\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Zinc plated\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCount:\u003c\/strong\u003e 1000 per package\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Self-piercing sheet metal fastening\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Malco","offers":[{"title":"Bulk \/ 3\/8 In. \/ #6","offer_id":42658647736368,"sku":"574-HW6X3\/8ZT","price":34.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/3883\/0640\/files\/e6ba4da9-19b5-4fd0-935e-dc8e66d6d5e5.png?v=1766159483","url":"https:\/\/usatooldepot.com\/products\/malco-6x3-8-zip-in-self-piercing-screws-1-4-slotted-hex-washer-head-sheet-metal-screws-fast-easy-piercing-zinc-plated-1000-count","provider":"USA Tool Depot","version":"1.0","type":"link"}