{"product_id":"confast-ldc385-3-8-in-x-5-in-zinc-plated-concrete-screw-strong","title":"CONFAST LDC385 3\/8 in x 5 in Zinc Plated Concrete Screw - Strong","description":"\u003cp\u003eIn this review the CONFAST LDC385 3\/8 in x 5 in concrete screw is evaluated for contractors, remodelers and serious DIYers who need a dependable masonry fastener. The bottom line: this screw is for anyone who must anchor heavy items to concrete, brick or block and values a simple, single piece design that installs with common tools. Reviewers found the \u003cstrong\u003eholding power\u003c\/strong\u003e and build quality suited to demanding jobs like bolting safes or securing wood to brick, while installation speed and the serrated head reduce back-out concerns.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerrated hex washer head:\u003c\/strong\u003e The serrations bite into the surface to help prevent back-out and keep the fastened item stable over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle piece design:\u003c\/strong\u003e Ready to install out of the box with no assembly, saving time on job sites and reducing the chances of lost parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZinc plated carbon steel:\u003c\/strong\u003e Provides a durable finish and corrosion resistance suitable for dry concrete environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard ANSI bit compatibility:\u003c\/strong\u003e Uses a common bit standard so installers can rely on familiar tools and predictable engagement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequires 3\/8 in drilled hole:\u003c\/strong\u003e Works with carbide tipped bits and a hammer drill for consistent anchoring performance in concrete.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThe CONFAST LDC385 is aimed at tradespeople and experienced homeowners who need a robust concrete screw for anchoring heavy fixtures such as safes, shelving, structural brackets or securing wood to masonry. Its single piece construction and standard driver size make it well suited to projects where speed and reliability matter.\u003c\/p\u003e\u003cp\u003eThose working in consistently wet or corrosive environments should look for a stainless steel or specialty coated anchor instead, since this product is specified for dry environments. For very fine finish work where a countersunk or flush head is required, alternate fasteners may be preferable.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eStrong \u003cstrong\u003eholding power\u003c\/strong\u003e for heavy fixtures when installed to specified embedment depth.\u003c\/li\u003e\n\u003cli\u003eEasy and quick to install thanks to the single piece design and ANSI bit compatibility.\u003c\/li\u003e\n\u003cli\u003eSerrated hex washer head helps prevent back-out and distributes load across the surface.\u003c\/li\u003e\n\u003cli\u003eGood value for a 25 per box pack for large projects.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSome users report occasional spinning without grip in poor quality or highly cracked concrete, so substrate condition matters.\u003c\/li\u003e\n\u003cli\u003eDesigned for dry environments only, not for prolonged exposure to moisture.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eCONFAST\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnchor diameter\u003c\/td\u003e\n\u003ctd\u003e3\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnchor length\u003c\/td\u003e\n\u003ctd\u003e5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial \u0026amp; finish\u003c\/td\u003e\n\u003ctd\u003eCarbon steel, zinc plated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead style\u003c\/td\u003e\n\u003ctd\u003eHex washer serrated head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrill hole required\u003c\/td\u003e\n\u003ctd\u003e3\/8 in carbide tipped bit, hammer drill\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDriver required\u003c\/td\u003e\n\u003ctd\u003e9\/16 in nut driver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe CONFAST LDC385 3\/8 in x 5 in concrete screw is a practical choice for professionals and seasoned DIYers who need a reliable masonry anchor with strong holding characteristics and easy installation. It offers solid value for larger projects, though buyers should ensure the concrete substrate is sound and the installation remains in a dry environment for best results.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat drill bit size is required?\u003c\/strong\u003e\u003cbr\u003eA 3\/8 in carbide tipped bit is required and a hammer drill is recommended for consistent holes in concrete.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat driver do I need?\u003c\/strong\u003e\u003cbr\u003eUse a 9\/16 in nut driver to install the screw into the anchor after drilling the hole.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this be used outdoors or in damp areas?\u003c\/strong\u003e\u003cbr\u003eThis anchor is zinc plated and intended for dry environments; choose stainless or specially coated anchors for prolonged wet exposure.\u003c\/p\u003e","brand":"CONFAST","offers":[{"title":"Default Title","offer_id":48240277422299,"sku":"B09RS549ZC","price":48.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61Wo2fkGgnL._SL1500.jpg?v=1771065497","url":"https:\/\/gearmusthave.com\/products\/confast-ldc385-3-8-in-x-5-in-zinc-plated-concrete-screw-strong","provider":"GearMustHave","version":"1.0","type":"link"}