{"product_id":"hillman-fasteners-375311-concrete-screw-1-4x3-1-4-in-100pk","title":"Hillman Fasteners 375311 Concrete Screw 1\/4x3-1\/4 in 100PK","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HILLMAN FASTENERS 375311 is a Phillips flat head tapper concrete screw designed for direct fastening into concrete, block, and masonry without requiring an anchor. Each screw measures 1\/4 inch in diameter by 3-1\/4 inches in length and features a Blue Perma-Seal corrosion-resistant coating. The flat head profile sits flush with the surface after installation. With a minimum embedment of 1-3\/4 inches into 4,000 psi concrete, this fastener delivers an ultimate tension load of 2,330 lb and an ultimate shear load of 2,390 lb. The package includes 100 screws and comes with a drill bit. Installed by licensed contractors, general tradespeople, and experienced DIYers working with concrete substrates.\u003c\/p\u003e\u003cp\u003eThis screw is suited for attaching wood, metal, and other materials to concrete, block, or brick in both residential and light commercial applications. Typical uses include securing electrical conduit straps, furring strips, sill plates, and mechanical equipment bases to concrete floors, walls, and foundations. The flush flat head is well-suited for applications where a low-profile finish is required. The included Phillips bit allows for immediate use with a standard drill or impact driver.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/4 inch diameter by 3-1\/4 inch length for medium-duty concrete fastening\u003c\/li\u003e\n\u003cli\u003eBlue Perma-Seal coating provides corrosion resistance in exposed or damp environments\u003c\/li\u003e\n\u003cli\u003e1-3\/4 inch minimum embedment depth into 4,000 psi concrete\u003c\/li\u003e\n\u003cli\u003eUltimate tension capacity: 2,330 lb in 4,000 psi concrete\u003c\/li\u003e\n\u003cli\u003eUltimate shear capacity: 2,390 lb in 4,000 psi concrete\u003c\/li\u003e\n\u003cli\u003ePhillips flat head profile installs flush with the work surface\u003c\/li\u003e\n\u003cli\u003e100-pack quantity includes a matching drill bit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in concrete, block, and masonry substrates as a direct-embed tapper screw requiring no plastic anchor or insert.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation requires pre-drilling a pilot hole in the concrete using the supplied or appropriate carbide-tipped masonry bit sized to the screw diameter. Confirm minimum embedment depth of 1-3\/4 inches is achieved for rated load performance. Follow applicable building codes and fastener manufacturer load tables when using in structural or code-inspected applications. Wear appropriate eye protection when drilling into concrete or masonry.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 3-1\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Type\u003c\/strong\u003e: Phillips Flat Head\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Phillips\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Blue Perma-Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Embedment\u003c\/strong\u003e: 1-3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltimate Tension (4,000 psi Concrete)\u003c\/strong\u003e: 2,330 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltimate Shear (4,000 psi Concrete)\u003c\/strong\u003e: 2,390 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 100\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 29.7 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HILLMAN FASTENERS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 375311\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HILLMAN","offers":[{"title":"Default Title","offer_id":51558657130802,"sku":"375311","price":446.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/280e033aa88b7b8ef480a30ed3ec9fe7.jpg?v=1786417154","url":"https:\/\/voomisupply.com\/products\/hillman-fasteners-375311-concrete-screw-1-4x3-1-4-in-100pk","provider":"Voomi Supply","version":"1.0","type":"link"}