{"product_id":"imscrews-1-4-x-3-hex-head-lag-screws-304-stainless-steel-partially-threaded-structural-bolts-for-over-sized-timber-framing-20-pcs","title":"IMSCREWS 1\/4  x 3  Hex Head Lag Screws, 304 Stainless Steel, Partially Threaded Structural Bolts for Over-Sized Timber Framing, 20   pcs","description":"\u003cp\u003e\"\u003cstrong\u003eIMSCREWS 1\/4 x 3 Heavy-Duty Lag Screws - 304 Stainless Steel (20 pcs)\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eExtended Reach for Deep Timber Joints\u003c\/strong\u003e\u003cbr\u003eWhen standard screws are too short, these 3-inch lag bolts provide the necessary depth for structural framing. Ideal for securing double-layered 2x lumber, mounting heavy fence rails, or attaching deck components to 4x posts. The 1\/4 diameter offers high shear resistance for safety-critical outdoor projects.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eVise-Like Clamping with Partial Threading\u003c\/strong\u003e\u003cbr\u003eOur \u003cstrong\u003epartially threaded shank\u003c\/strong\u003e features a smooth upper section. This allows the bolt to pull the outer board tightly against the support beam without the threads biting prematurely in the top board. This clamping effect ensures a gap-free, rock-solid joint, preventing the bridging effect common in 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. It prevents chemical corrosion and eliminates unsightly rust streaks on high-value cedar, redwood, or 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\u003e7\/16 hex socket\u003c\/strong\u003e or wrench.\u003cbr\u003e\u003cstrong\u003e¡ñ Pre-drilling:\u003c\/strong\u003e Recommended to prevent splitting. Use a 1\/8 bit for softwoods or 3\/16 bit for hardwoods.\u003cbr\u003e\u003cstrong\u003e¡ñ Why 3 length?\u003c\/strong\u003e Perfect for passing through 1.5 timber with a deep 1.5 thread anchor in the base post.\u003cbr\u003e\u003cstrong\u003e¡ñ Resilience:\u003c\/strong\u003e Rated for marine, coastal, and high-humidity outdoor use.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003cbr\u003e- Size: 1\/4 x 3 \u003cbr\u003e- Thread: Partially Threaded (Max Clamping)\u003cbr\u003e- Material: 304 Stainless Steel (18-8)\u003cbr\u003e- Drive: 7\/16 Hex Head\u003cbr\u003e- Qty: 20 pcs\"\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMAXIMIZED CLAMPING FORCE  The engineered partial thread allows the smooth shank to bypass the primary timber, focusing the entire thread engagement on the support member to draw the joint tightly together.\u003c\/li\u003e\n\u003cli\u003eTHERMAL FRICTION CONTROL  By reducing thread contact in the upper shaft, this design lowers driving resistance and heat accumulation, protecting the stainless steel from snapping during deep 3-inch penetrations.\u003c\/li\u003e\n\u003cli\u003eCORE-LEVEL 304 PROTECTION  Forged from premium 304 (18-8) stainless steel to prevent rust in the moisture-prone core of oversized timber. Fully compatible with ACQ pressure-treated lumber.\u003c\/li\u003e\n\u003cli\u003eHEAVY-DUTY SHEAR CAPACITY  The robust 1\/4-inch diameter provides elite structural strength, offering a secure, bolt-level hold for deck posts, pergolas, and heavy framing projects.\u003c\/li\u003e\n\u003cli\u003eTECHNICAL INSTALLATION  To ensure joint integrity, pre-drilling a pilot hole (3\/16  for softwoods, 7\/32  for hardwoods) is required for consistent seating of these long 3-inch bolts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASIN:\u003c\/strong\u003e B0F21DRYLQ\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal SKU:\u003c\/strong\u003e IMS0620\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/4\" x 3\"\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 20\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IMSCREWS","offers":[{"title":"Default Title","offer_id":57034500210854,"sku":"B0F21DRYLQ","price":12.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0271\/2784\/0903\/files\/41keW3A_9kL_eb74ab75-faa1-4067-a39e-e6db9f14afe3.jpg?v=1787035588","url":"https:\/\/www.imscrews.com\/products\/imscrews-1-4-x-3-hex-head-lag-screws-304-stainless-steel-partially-threaded-structural-bolts-for-over-sized-timber-framing-20-pcs","provider":"IMSCREWS","version":"1.0","type":"link"}