{"product_id":"malco-zip-in-self-piercing-screws-5-16-slotted-hex-washer-head-sheet-metal-screws-type-a-single-thread-zinc-plated-1800-12-x-2","title":"Malco Zip-In Self-Piercing Screws | 5\/16\" Slotted Hex Washer Head Sheet Metal Screws  | Type A Single Thread | Zinc Plated (1800, #12 x 2\")","description":"\u003cdiv\u003e\n\u003cp\u003eThe Malco Zip-In Self-Piercing Screws, model HW12X2, bring fast, reliable fastening to thin sheet metal jobs with a single streamlined step. These 5\/16 in. slotted hex washer head screws are zinc plated for durability and corrosion resistance, designed to zip through metal without the need for pre-drilling. Packaged in practical quantities, they’re ready for larger projects or ongoing work on ductwork, roofing, or sign fabrication.\u003c\/p\u003e \u003ch3\u003eWhat makes these screws stand out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSelf-piercing design\u003c\/strong\u003e eliminates the need for pilot holes on thin-gauge sheet metal, speeding up installations and reducing tool wear.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e5\/16\" slotted hex washer head\u003c\/strong\u003e provides a secure seating surface with ample bearing area, while the washer helps seal and distribute load to resist pull-out.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType A single thread\u003c\/strong\u003e is optimized for metal-to-metal fastening, delivering clean, fast cutting and strong clamping in one motion.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eZinc plating\u003c\/strong\u003e offers improved corrosion resistance for longer service life in exposed or humid environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFlexible options\u003c\/strong\u003e—longer lengths and multi-piece quantities are available to fit a wide range of applications, including the 1800-piece packs referenced in the product title.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal uses and scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eHVAC ductwork assemblies and metal enclosure builds where quick, reliable fastening is essential.\u003c\/li\u003e \u003cli\u003eThin-gauge roofing, siding, and flashing installations where a clean finish and strong hold matter most.\u003c\/li\u003e \u003cli\u003eSign mounting, metal framing, and lightweight automotive body repairs that require a dependable, easy-to-drive fastener.\u003c\/li\u003e \u003cli\u003eAny project that benefits from a fast, pre-drilled-free installation with a sealed washer under the head.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003col\u003e \u003cli\u003eAlign workpieces and position the screw where you need fastenings to occur.\u003c\/li\u003e \u003cli\u003eUse a compatible hex driver to drive the screw; the self-piercing tip will begin cutting through the metal as you apply steady pressure.\u003c\/li\u003e \u003cli\u003eDrive until the washer seats flush and the head sits evenly; avoid excessive torque to prevent damage to the washer or material.\u003c\/li\u003e \u003cli\u003eFor thicker assemblies, consider using a longer length option from the available selection to ensure full engagement.\u003c\/li\u003e\n\u003c\/ol\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eHead and drive: 5\/16\" slotted hex washer head\u003c\/li\u003e \u003cli\u003eThread style: Type A single thread\u003c\/li\u003e \u003cli\u003eMaterial finish: Zinc plated for corrosion resistance\u003c\/li\u003e \u003cli\u003ePackage options: Longer lengths and multi-piece quantities available, including 1800-piece packs\u003c\/li\u003e \u003cli\u003eApplication: Self-piercing sheet metal screws suitable for metal-to-metal joins\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Malco","offers":[{"title":"Bulk \/ 2 In. \/ #12","offer_id":42658645803056,"sku":"574-HW12X2","price":319.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/3883\/0640\/files\/73f5c716-affc-4928-8362-bd6e203dabd7.png?v=1766159471","url":"https:\/\/usatooldepot.com\/products\/malco-zip-in-self-piercing-screws-5-16-slotted-hex-washer-head-sheet-metal-screws-type-a-single-thread-zinc-plated-1800-12-x-2","provider":"USA Tool Depot","version":"1.0","type":"link"}