{"product_id":"3-8-x-4-stainless-lag-bolt-25-pack-heavy-duty-wood-lag-screw","title":"3\/8 x 4 Stainless Lag Bolt (25-Pack) - Heavy Duty Wood Lag Screw","description":"\u003cp\u003eIn this review the 3\/8 x 4 Stainless Lag Bolt (25-Pack) is evaluated for contractors, carpenters and DIYers who need corrosion-resistant, heavy duty lag screws for wood and structural repairs. The single biggest reason to buy is the mill certified 18-8 (304) stainless steel construction that resists rust in exterior and exposed projects while meeting commercial ASME B18.2.1 standards. For anyone replacing rusted fasteners or fastening large beams, these lag bolts promise reliable strength and long-term durability.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter and length:\u003c\/strong\u003e The 3\/8 in diameter and 4 in length give good shear and pullout strength for medium to large timber connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial quality:\u003c\/strong\u003e Manufactured from mill certified 18-8 (304) stainless steel for corrosion resistance in outdoor and coastal environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead design:\u003c\/strong\u003e The heavy duty hex head (9\/16 in) provides a positive drive and allows high torque with standard wrenches for secure installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommercial grade:\u003c\/strong\u003e Packaged and tested to meet ASME B18.2.1 standards, which provides assurance for professional and industrial use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConvenience pack:\u003c\/strong\u003e Twenty-five lag screws per bag supply enough fasteners for multiple smaller projects or a single larger job without constant reordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation note:\u003c\/strong\u003e A pilot hole is recommended to reduce splitting and to make driving these long stainless lag screws easier and more accurate.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe 3\/8 x 4 Stainless Lag Bolt is best for builders, deck contractors, and serious DIYers who need durable, rust-resistant fasteners for structural wood connections, beam attachments, and exterior projects. Its 18-8 stainless construction makes it a practical choice where corrosion is a concern.\u003c\/p\u003e\n\u003cp\u003eThose working on very small trim, light furniture, or where a different head style is required should look elsewhere, and users who require specialty grades higher than 304 stainless (for extreme marine use) may prefer a different alloy. For most residential and light commercial uses, these lag screws are an appropriate and cost-effective choice.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh corrosion resistance from 18-8 (304) stainless steel for outdoor longevity.\u003c\/li\u003e\n\u003cli\u003eCommercial\/industrial grade testing to ASME B18.2.1 provides consistent sizing and quality.\u003c\/li\u003e\n\u003cli\u003eHex head design and 25-pack packaging make installation efficient for professionals and homeowners.\u003c\/li\u003e\n\u003cli\u003eCustomers report strong, durable performance when replacing rusted lag bolts or fastening large beams.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e304 stainless is corrosion resistant but not the highest marine-grade alloy, so extreme saltwater exposure may need a higher specification.\u003c\/li\u003e\n\u003cli\u003eBecause these are heavy duty lag screws, a pilot hole is recommended which adds an extra installation step.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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\u003e4 in (measured from bottom of head to point)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead size\u003c\/td\u003e\n\u003ctd\u003e9\/16 in hex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e18-8 (304) stainless steel, mill certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e25 lag screws per bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003ePackaged and tested to meet ASME B18.2.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003ePilot hole recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 3\/8 x 4 Stainless Lag Bolt (25-Pack) is a solid choice for anyone needing dependable, corrosion-resistant lag screws for structural wood work. With mill certified 18-8 stainless steel and ASME testing, it offers good value for contractors and committed DIYers who want long-lasting performance on exterior and load-bearing applications.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these lag bolts suitable for outdoor use?\u003c\/strong\u003e\u003cbr\u003eYes. The 18-8 (304) stainless steel construction offers good corrosion resistance for most outdoor and residential applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need to predrill holes?\u003c\/strong\u003e\u003cbr\u003eYes. A pilot hole is recommended to prevent wood splitting and to ease installation for the 4 in length.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow many screws come in a pack?\u003c\/strong\u003e\u003cbr\u003eEach bag contains 25 lag screws, enough for multiple connections or a single large project run.\u003c\/p\u003e","brand":"Makers Bolt","offers":[{"title":"Default Title","offer_id":48249656606939,"sku":"B0BFFW4NJC","price":38.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71gFHUhoAiL._SL1500.jpg?v=1776271749","url":"https:\/\/gearmusthave.com\/products\/3-8-x-4-stainless-lag-bolt-25-pack-heavy-duty-wood-lag-screw","provider":"GearMustHave","version":"1.0","type":"link"}