Substantial Strength for Structural Timber Connections The IMSCREWS 5/16" x 1-3/4" carriage bolt is engineered for projects requiring reliable shear resistance and stable structural support. With a robust 5/16-inch diameter and a 1.75-inch length, these bolts are well-suited for high-load joints where stability is critical, such as securing heavy-duty brackets to standard 2x lumber or reinforcing outdoor furniture frames. Built for durability, they offer the stability necessary for long-term use in residential DIY projects and industrial applications.
High Durability and Safety-Focused Design Forged from premium 18-8 (304) stainless steel, these fasteners are highly resistant to rust and corrosion in coastal or humid environments. The smooth round head offers a clean appearance that reduces snagging hazards, making them an ideal choice for railings, play sets, and benches. The integrated square neck prevents rotation, allowing for easy, one-sided installation with a single wrench from the nut side.
Pro-Tips: 1. Use a 5/16" drill bit to ensure a snug, structural fit for the square neck. 2. Pair with stainless steel flat washers on the nut side to distribute structural load and protect wood fibers.
Key Features
Self-Locking Square Neck: Features a precision-forged square neck beneath the head that bites into wood, preventing the bolt from spinning while the nut is tightened for a secure, one-sided install.
Full Thread Maximum Grip: The fully threaded 1.75-inch shank offers maximum grip and enhanced fastening power along its entire length, making it ideal for structural framing and heavy-duty DIY projects.
304 Marine Grade Stainless: Forged from premium 18-8 (304) Stainless Steel for superior corrosion defense. Essential for outdoor structures, coastal decks, and ACQ pressure-treated lumber.
Heavy-Duty Structural Strength: The 5/16 diameter delivers professional-grade shear resistance. At 1-3/4 long, these bolts are Well-suited for securing brackets to standard 2x lumber or thick metal plates.
Snag-Free Aesthetic Finish: The smooth, domed round head provides a professional, low-profile finish without sharp edges, ensuring safety for playground equipment, fencing, and furniture.
