{"product_id":"3-8-x-3-1-2-lag-screw-kit-50-pack-weatherproof-industrial-grade","title":"3\/8 x 3-1\/2 Lag Screw Kit (50 Pack) - Weatherproof Industrial Grade","description":"\u003cp\u003eIn this review of the 3\/8 x 3-1\/2 Lag Screw Kit, the bottom line is simple: this kit is for contractors, cabinet installers, deck builders and serious DIYers who need a reliable, weatherproof fastener in production quantities. The reviewer finds the combination of Grade A307 lag bolts and USS flat washers, supplied as a 50 screw and 50 washer kit, delivers consistent strength and value. The single biggest reason to buy is the four-layer Black Ruspert ceramic coating, which provides improved rust resistance for exterior use and compatibility with ACQ treated lumber.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize and fit:\u003c\/strong\u003e Each lag screw is 3\/8 in diameter and 3-1\/2 in long, providing deep embedment for structural connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete kit:\u003c\/strong\u003e The package includes 50 Grade 307A hex lag screws and 50 USS flat washers, so projects that require matched hardware are ready out of the box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeatherproof coating:\u003c\/strong\u003e Black Ruspert ceramic coating offers a multi-layer barrier that improves corrosion resistance for exterior applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCode conformity:\u003c\/strong\u003e Meets common industry standards for hardware strength and dimensions, making them suitable for many commercial and industrial uses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLumber compatibility:\u003c\/strong\u003e Rated for use with ACQ treated lumber when installed properly, expanding their use on outdoor builds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis kit is best for professionals and experienced DIYers who install multiple lag connections and want consistent hardware in quantity. Contractors who mount heavy millwork, signage, outdoor displays or ledger boards will appreciate the included washers and the industrial grade of the bolts.\u003c\/p\u003e\n\u003cp\u003eIt is not aimed at casual one-off users who need a single bolt or a decorative fastener; those users should look for smaller multi-size assortments or stainless options if finish longevity under harsh coastal exposure is a top priority.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDurable Grade A307 construction provides the strength expected for structural lag applications.\u003c\/li\u003e\n\u003cli\u003eThe 50 screw and 50 washer count simplifies large jobs and reduces repeat ordering.\u003c\/li\u003e\n\u003cli\u003eBlack Ruspert coating delivers better rust resistance than standard galvanized finishes for outdoor use.\u003c\/li\u003e\n\u003cli\u003eWashers included help distribute load and protect wood surfaces during tightening.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe coated finish can chip or flake during heavy impact driver installation, so care or pilot holes are recommended.\u003c\/li\u003e\n\u003cli\u003eNot stainless steel, so extreme marine environments may require a different alloy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e3\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e3-1\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead width\u003c\/td\u003e\n\u003ctd\u003e9\/16 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit contents\u003c\/td\u003e\n\u003ctd\u003e50 lag screws and 50 USS flat washers (total 100 pcs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWasher outside diameter\u003c\/td\u003e\n\u003ctd\u003e1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eBlack Ruspert 4-layer ceramic coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards\u003c\/td\u003e\n\u003ctd\u003eMeets ASTM A307 and ASME B18.2.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 3\/8 x 3-1\/2 Lag Screw Kit is a practical choice for builders who need a reliable, weather-resistant fastener in bulk. It balances strength, value and improved rust resistance, making it a sensible buy for outdoor projects and commercial installations, provided installers use pilot holes or moderate torque to protect the coating.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these lag screws suitable for treated lumber?\u003c\/strong\u003e\u003cbr\u003eYes, the product is specified as suitable for use with ACQ treated lumber when installed correctly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo the screws come with washers?\u003c\/strong\u003e\u003cbr\u003eYes, the kit includes 50 USS flat washers sized 1 in outside diameter to accompany the 50 lag screws.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShould I predrill before installing?\u003c\/strong\u003e\u003cbr\u003eYes, a pilot hole is recommended to ease installation and reduce the risk of coating chipping or wood splitting.\u003c\/p\u003e","brand":"MAKERS BOLT","offers":[{"title":"Default Title","offer_id":48256307495131,"sku":"B0DM2SMFL7","price":55.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/6107aDkAxhL._SL1500_d4258ed6-0e42-46cd-9571-281aaf9f565a.jpg?v=1778333812","url":"https:\/\/gearmusthave.com\/products\/3-8-x-3-1-2-lag-screw-kit-50-pack-weatherproof-industrial-grade","provider":"GearMustHave","version":"1.0","type":"link"}