{"product_id":"imscrews-5-16-x-4-1-2-hex-head-lag-screws-304-stainless-steel-partially-threaded-extra-long-structural-framing-bolts-5-pcs","title":"IMSCREWS 5\/16  x 4-1\/2  Hex Head Lag Screws, 304 Stainless Steel, Partially Threaded Extra-Long Structural Framing Bolts, 5   pcs","description":"\"\u003cstrong\u003eIMSCREWS 5\/16 x 4-1\/2 Heavy-Duty Lag Screws - 304 Stainless Steel (5 pcs)\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eExtreme Structural Penetration\u003c\/strong\u003e\u003cbr\u003eOur 4.5-inch lag bolts are designed for extra-thick timber assemblies and deep-core anchoring. The robust 5\/16 diameter provides professional-grade shear resistance, making these the ideal choice for securing heavy beams, landscaping ties, or large structural brackets to 6x6 posts.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eVise-Like Clamping Power\u003c\/strong\u003e\u003cbr\u003eOur \u003cstrong\u003epartially threaded shank\u003c\/strong\u003e features a smooth upper section that allows the bolt to pull the outer timber tightly against the support structure. This creates a gap-free, rock-solid joint, eliminating the bridging effect common in extra-long full-thread screws for a professional-grade finish.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e304 Stainless Weather Protection\u003c\/strong\u003e\u003cbr\u003eForged from premium 18-8 (304) stainless steel for elite rust protection in outdoor and humid environments. compatible with \u003cstrong\u003eACQ pressure-treated lumber\u003c\/strong\u003e. Prevents unsightly rust streaks on high-value cedar, redwood, or premium deck framing.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e¡ñ Tools:\u003c\/strong\u003e Fits a standard \u003cstrong\u003e1\/2 hex socket\u003c\/strong\u003e or wrench.\u003cbr\u003e\u003cstrong\u003e¡ñ Pre-drilling:\u003c\/strong\u003e Mandatory for this length. Use a 3\/16 bit for softwoods or 7\/32 for hardwoods to prevent timber splitting.\u003cbr\u003e\u003cstrong\u003e¡ñ Why 4-1\/2 length?\u003c\/strong\u003e Optimized for passing through 2.5 or 3 timber with a deep 1.5 + thread anchor in the base beam.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003cbr\u003e- Size: 5\/16 x 4-1\/2 \u003cbr\u003e- Thread: Partially Threaded (Max Clamping)\u003cbr\u003e- Material: 304 Stainless Steel\u003cbr\u003e- Drive: 1\/2 Hex Head\u003cbr\u003e- Qty: 5 pcs\"\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eULTIMATE STRUCTURAL CLAMPING The 4.5  length with partial threading allows the shank to bypass outer layers, pulling thick timbers together for a professional, gap-free joint.\u003c\/li\u003e\n\u003cli\u003eDEEP ANCHOR STRENGTH Engineered for heavy-load applications, providing elite withdrawal and shear resistance for beams, posts, and framing.\u003c\/li\u003e\n\u003cli\u003e304 MARINE-GRADE PROTECTION Forged from premium 304 (18-8) stainless steel to endure humid conditions and prevent rust staining in cedar, redwood, or ACQ lumber.\u003c\/li\u003e\n\u003cli\u003eSTABLE TORQUE INTERFACE Robust hex head fits standard 1\/2  socket drives, delivering maximum torque transfer for controlled seating in dense structural timbers.\u003c\/li\u003e\n\u003cli\u003eTECHNICAL SPECIFICATION To ensure structural safety and prevent splitting, pre-drilling a pilot hole (3\/16  for softwoods, 1\/4  for hardwoods) is required.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASIN:\u003c\/strong\u003e B0F21C51F4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal SKU:\u003c\/strong\u003e IMS0651\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 5\/16\" x 4-1\/2\"\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 5\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IMSCREWS","offers":[{"title":"Default Title","offer_id":57034533994662,"sku":"B0F21C51F4","price":7.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0271\/2784\/0903\/files\/5127F26r8IL_e33ac0f3-70a7-41bb-babd-dd57b352909e.jpg?v=1787035625","url":"https:\/\/www.imscrews.com\/products\/imscrews-5-16-x-4-1-2-hex-head-lag-screws-304-stainless-steel-partially-threaded-extra-long-structural-framing-bolts-5-pcs","provider":"IMSCREWS","version":"1.0","type":"link"}