{"product_id":"imscrews-3-8-x-4-hex-head-lag-screws-304-stainless-steel-partially-threaded-structural-wood-bolts-for-heavy-timber-beams-10-pcs","title":"IMSCREWS 3\/8  x 4  Hex Head Lag Screws, 304 Stainless Steel, Partially Threaded Structural Wood Bolts for Heavy Timber \u0026 Beams, 10   pcs","description":"\u003cp\u003e\"\u003cstrong\u003eIMSCREWS 3\/8 x 4 Heavy-Duty Lag Screws - 304 Stainless Steel (10 pcs)\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eExtreme Reach for Structural Timber Joints\u003c\/strong\u003e\u003cbr\u003eWhen your project demands deep penetration and unyielding holding power, these 3\/8 x 4 Lag Bolts deliver industrial performance. Perfect for securing landscape timbers, mounting heavy gate posts, or joining structural beams. The 4-inch length provides elite-level stability for thick, load-bearing wood members.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eVise-Like Clamping Power\u003c\/strong\u003e\u003cbr\u003eOur \u003cstrong\u003epartially threaded shank\u003c\/strong\u003e allows the screw to spin freely in the outer board while the deep threads bite into the support beam. This draws the components together into a gap-free joint, eliminating the bridging effect where boards remain loose—a common failure in extra-long full-thread screws.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e304 Stainless Exterior Defense\u003c\/strong\u003e\u003cbr\u003eForged from premium 18-8 (304) Stainless Steel for ultimate weather resistance. compatible with \u003cstrong\u003eACQ pressure-treated lumber\u003c\/strong\u003e, preventing chemical corrosion and ensuring no unsightly rust streaks will ruin your cedar, redwood, or structural deck framing.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTechnical FAQ\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e¡ñ Tools Required:\u003c\/strong\u003e Fits a standard \u003cstrong\u003e9\/16 hex socket\u003c\/strong\u003e or wrench.\u003cbr\u003e\u003cstrong\u003e¡ñ Pre-drilling:\u003c\/strong\u003e Mandatory for this diameter and depth. Use a \u003cstrong\u003e1\/4 bit for softwoods\u003c\/strong\u003e or \u003cstrong\u003e9\/32 bit for hardwoods\u003c\/strong\u003e to prevent splitting.\u003cbr\u003e\u003cstrong\u003e¡ñ Why 4 length?\u003c\/strong\u003e Optimized for passing through 2 or 3 thick timber with a strong 1 to 2 thread anchor in the base post.\u003cbr\u003e\u003cstrong\u003e¡ñ Resilience:\u003c\/strong\u003e Rated for marine, coastal, and high-humidity environments.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003cbr\u003e- Size: 3\/8 x 4 \u003cbr\u003e- Thread: Partially Threaded (Max Clamping)\u003cbr\u003e- Material: 304 Stainless Steel (18-8)\u003cbr\u003e- Drive: 9\/16 Hex Head\u003cbr\u003e- Qty: 10 pcs\"\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eELITE CLAMPING POWER  The partially threaded design ensures the smooth shank passes through the outer member, pulling heavy timber pieces together with immense force for a gap-free joint.\u003c\/li\u003e\n\u003cli\u003eINDUSTRIAL STRUCTURAL HOLD  The robust 3\/8-inch diameter and 4-inch length provide elite shear resistance for heavy-duty framing, 4x4\/6x6 posts, and deck main beams.\u003c\/li\u003e\n\u003cli\u003e304 STAINLESS DEFENSE  Forged from premium 304 (18-8) stainless steel to prevent oxidation deep within wood joints. Chemically compatible with ACQ pressure-treated lumber.\u003c\/li\u003e\n\u003cli\u003ePOWER TOOL OPTIMIZED  Features an oversized hex head built for 9\/16  power sockets. Designed to handle the extreme torque required for deep 4-inch structural penetrations.\u003c\/li\u003e\n\u003cli\u003eSTRUCTURAL GUIDELINE  To ensure joint integrity and prevent timber splitting, pre-drilling a pilot hole (1\/4  for softwoods, 9\/32  for hardwoods) is mandatory for this massive 3\/8  bolt.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASIN:\u003c\/strong\u003e B0F21BQWCH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal SKU:\u003c\/strong\u003e IMS0680\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 3\/8\" 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 10\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IMSCREWS","offers":[{"title":"Default Title","offer_id":57034567975078,"sku":"B0F21BQWCH","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0271\/2784\/0903\/files\/5127F26r8IL_725aff02-3f4f-44e8-81ce-3496b8f643d5.jpg?v=1787035665","url":"https:\/\/www.imscrews.com\/ru\/products\/imscrews-3-8-x-4-hex-head-lag-screws-304-stainless-steel-partially-threaded-structural-wood-bolts-for-heavy-timber-beams-10-pcs","provider":"IMSCREWS","version":"1.0","type":"link"}