{"product_id":"imscrews-1-4-20-x-4-carriage-bolts-304-18-8-stainless-steel-round-head-square-neck-full-thread-long-structural-wood-bolts-20-pack","title":"IMSCREWS 1\/4-20 x 4 Carriage Bolts, 304 18-8 Stainless Steel, Round Head \u0026 Square Neck, Full Thread Long Structural Wood Bolts, 20 Pack","description":"\u003cp\u003e\u003cstrong\u003eIMSCREWS 1\/4\"-20 x 4\" 304 Stainless Steel Carriage Bolts (20 PCS)\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eReliable Support for Long-Reach Timber Connections\u003c\/strong\u003e\u003cbr\u003eThe IMSCREWS 1\/4\" x 4\" carriage bolt is designed for projects requiring deep penetration and stable structural support. With a 4-inch length, these bolts are well-suited for through-bolting standard 4x4 posts or joining multiple layers of dimensional lumber. Built for versatility, they offer the stability necessary for long-term use in garden gates, fences, and outdoor furniture assembly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eHigh Durability and Safety-Focused Design\u003c\/strong\u003e\u003cbr\u003eForged from 18-8 (304) stainless steel, these fasteners are highly resistant to corrosion in outdoor environments and are compatible with pressure-treated lumber. The smooth round head offers a \u003cstrong\u003eclean\u003c\/strong\u003e appearance that reduces snagging hazards, making them an \u003cstrong\u003eideal\u003c\/strong\u003e choice for railings, play sets, and benches. The integrated square neck prevents the bolt from spinning, allowing for easy, one-sided installation with a single wrench.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003cbr\u003e- Thread: 1\/4\"-20 Coarse; Length: 4\" (Under Head)\u003cbr\u003e- Material: 304 (18-8) Stainless Steel; Full Thread\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFAQ:\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eQ: Drill bit size?\u003c\/strong\u003e A: A 1\/4\" bit provides a \u003cstrong\u003esnug\u003c\/strong\u003e, structural fit.\u003cbr\u003e\u003cstrong\u003eQ: Coastal safe?\u003c\/strong\u003e A: Yes, 304 SS offers high resistance to salt air corrosion.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePro-Tips:\u003c\/strong\u003e\u003cbr\u003e1. Ensure the pilot hole is perfectly perpendicular for 4\" bolts to avoid alignment issues in thick timber.\u003cbr\u003e2. Pair with a flat washer on the nut side to distribute structural load and protect wood fibers.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePREMIUM 304 STAINLESS STEEL Crafted from high-quality 18-8 (304) stainless steel, these carriage bolts offer superior rust and corrosion resistance. Ideal for outdoor structures, garden projects, and coastal environments.\u003c\/li\u003e\n\u003cli\u003eEXTRA LONG FULL THREAD DESIGN The 4-inch length combined with a full thread design offers maximum versatility. It ensures a secure, tight fit even when joining varying material thicknesses, without the limit of a smooth shank.\u003c\/li\u003e\n\u003cli\u003eSELF-LOCKING SQUARE NECK Features a precision-engineered square neck that bites into wood to prevent spinning. This allows for easy one-sided tightening during installation, making it ideal for deep-hole fastening.\u003c\/li\u003e\n\u003cli\u003eSMOOTH SAFETY FINISH The domed round mushroom head provides a professional, low-profile appearance without sharp edges. Ideal for garden trellises, fences, and outdoor structures where safety is a priority.\u003c\/li\u003e\n\u003cli\u003eSPECIFICATIONS \u0026amp; NOTE Package includes 20 pieces of 1\/4-20 x 4 carriage bolts only. Nuts and washers are NOT included. We recommend pre-drilling a 1\/4 hole for a professional, precise fit.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASIN:\u003c\/strong\u003e B0F2F4DFHL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal SKU:\u003c\/strong\u003e IMS0764\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/4\"-20 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 Round\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":57033991127206,"sku":"B0F2F4DFHL","price":12.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0271\/2784\/0903\/files\/51ZaVl7AlSL_245d4ce6-e075-48a6-9ea7-a9dbb4537edd.jpg?v=1787034777","url":"https:\/\/www.imscrews.com\/ru\/products\/imscrews-1-4-20-x-4-carriage-bolts-304-18-8-stainless-steel-round-head-square-neck-full-thread-long-structural-wood-bolts-20-pack","provider":"IMSCREWS","version":"1.0","type":"link"}