{"product_id":"imscrews-1-2-x-4-hex-head-lag-screws-304-stainless-steel-partially-threaded-industrial-wood-bolts-for-heavy-timber-docks-2-pcs","title":"IMSCREWS 1\/2  x 4  Hex Head Lag Screws, 304 Stainless Steel, Partially Threaded Industrial Wood Bolts for Heavy Timber \u0026 Docks, 2   pcs","description":"\u003cp\u003e\u003cstrong\u003eIMSCREWS 1\/2\" x 4\" Heavy-Duty Hex Head Lag Screws - 304 Stainless Steel (2 PCS)\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eHeavy-Duty Industrial Anchoring\u003c\/strong\u003e\u003cbr\u003eThe 1\/2\" diameter provides substantial shear resistance for industrial and marine timber projects. At 4 inches in length, these fasteners are specifically engineered for high-load applications such as dock construction, heavy timber framing, and securing ledger boards to structural supports.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e304 Stainless Corrosion Protection\u003c\/strong\u003e\u003cbr\u003eManufactured from premium 18-8 (304) stainless steel, offering effective resistance against rust in outdoor, humid, or marine environments. They are compatible with ACQ pressure-treated lumber, helping to maintain structural integrity and prevent rust staining on premium wood surfaces like cedar and redwood.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePartial Thread Clamping Design\u003c\/strong\u003e\u003cbr\u003eThe partially threaded shank allows the bolt to pull the outer timber tightly against the support structure. This design facilitates a firm joint by ensuring the threads only engage the base material, helping to eliminate gaps between thick connected timber surfaces for a stable, professional finish.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e¡ñ Installation Tool:\u003c\/strong\u003e Use with a standard \u003cstrong\u003e3\/4\" hex socket\u003c\/strong\u003e or wrench.\u003cbr\u003e\u003cstrong\u003e¡ñ Pre-drilling Guide:\u003c\/strong\u003e To prevent timber splitting and ensure a secure fit, pre-drilling a pilot hole is required. Use a \u003cstrong\u003e5\/16\" bit\u003c\/strong\u003e for softwoods or an \u003cstrong\u003e11\/32\" bit\u003c\/strong\u003e for hardwoods.\u003cbr\u003e\u003cstrong\u003e¡ñ Installation Tip:\u003c\/strong\u003e For smoother installation in dense wood, applying a small amount of lubricant to the threads is recommended. Use low-speed settings to avoid thread galling during high-torque application.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003cbr\u003e- Size: 1\/2\" x 4\"\u003cbr\u003e- Thread: Partially Threaded\u003cbr\u003e- Material: 304 Stainless Steel (18-8)\u003cbr\u003e- Drive: 3\/4\" Hex Head\u003cbr\u003e- Qty: 2 PCS\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eULTIMATE STRUCTURAL HOLD  The massive 1\/2-inch diameter and 4-inch length provide elite shear resistance for heavy-duty timber framing, deck main beams, and marine hardware.\u003c\/li\u003e\n\u003cli\u003eENGINEERED CLAMPING FORCE  Featuring a partially threaded design that allows the smooth shank to pass through the outer member, pulling thick timber together with bolt-level clamping force.\u003c\/li\u003e\n\u003cli\u003eDEEP-CORE 304 PROTECTION  Forged from premium 304 (18-8) stainless steel to prevent rust deep within timber. Chemically compatible with ACQ pressure-treated lumber for high-moisture use.\u003c\/li\u003e\n\u003cli\u003eINDUSTRIAL DRIVE INTERFACE  Features an oversized hex head built for 3\/4  power sockets. Designed to handle the extreme torque required for deep 4-inch structural penetrations.\u003c\/li\u003e\n\u003cli\u003eTECHNICAL INSTALLATION  To ensure joint integrity and prevent timber splitting, pre-drilling a pilot hole (5\/16  for softwoods, 11\/32  for hardwoods) is mandatory for this massive 1\/2  bolt.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASIN:\u003c\/strong\u003e B0F21C1K8Y\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal SKU:\u003c\/strong\u003e IMS0706\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\" x 4\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Style:\u003c\/strong\u003e Hex\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IMSCREWS","offers":[{"title":"Default Title","offer_id":57034580426918,"sku":"B0F21C1K8Y","price":7.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0271\/2784\/0903\/files\/5127F26r8IL_1df67262-8771-4b30-87c4-5a58a4b1bab4.jpg?v=1787035710","url":"https:\/\/www.imscrews.com\/ru\/products\/imscrews-1-2-x-4-hex-head-lag-screws-304-stainless-steel-partially-threaded-industrial-wood-bolts-for-heavy-timber-docks-2-pcs","provider":"IMSCREWS","version":"1.0","type":"link"}