IMSCREWS 3/8-16 x 2-1/4 Carriage Bolts, 304 (18-8) Stainless Steel, Round Head & Square Neck, Full Thread Structural Bolts for Wood & Metal, 10 Pack — Open-Box, 5% Off

HEAVY-DUTY 304 STAINLESS STEEL Made from high-grade 18-8 (304) stainless steel, providing superior rust and corrosion resistance. Well-suited for outdoor projects where lasting structural safety and aesthetic finish are required. ADJUSTABLE FULL THREAD DESIGN The 2-1/4 length features a full thread, allowing maximum versatility for various material thicknesses. Ensures a tight, secure fit without the limitations of a smooth shank. SMOOTH SAFETY FINISH The domed round head provides a professional, low-profile look with no sharp edges, making it ideal for play sets, benches, and high-traffic areas where safety is a priority. SELF-LOCKING INSTALLATION The precision-engineered square neck bits into wood to prevent spinning, enabling easy one-sided tightening with a single wrench. NOTE: BOLTS ONLY This package includes 10 pieces of 3/8-16 x 2-1/4 carriage bolts. Nuts and washers are NOT included. Please pair with 3/8-16 stainless steel accessories for a complete set.

"Professional-Grade Structural Fastening with IMSCREWS
When your project demands a balance of heavy-duty strength and long-lasting rust protection, IMSCREWS 3/8-16 x 2-1/4 carriage bolts deliver. Crafted from high-quality 304 (18-8) stainless steel, these fasteners are engineered to withstand humidity, rain, and the elements, ensuring your outdoor deck, gazebo, or playground set remains structurally sound for years to come.

Versatile Full-Thread Engineering
Unlike standard bolts that may have an unthreaded shank, our 2-1/4 bolts are fully threaded. This provides maximum clamping range, making them the Designed for solution for joining 2x4 timbers (actual 1.5 thickness) to various brackets, plates, or additional boards. The 3/8 diameter provides massive shear strength, making it the go-to size for heavy timber framing.

Safe and Secure Installation
The smooth, domed mushroom head offers a clean, professional finish that is child-safe and snag-free—ideal for benches, garden furniture, and play sets. The precision-designed square neck seats firmly into pre-drilled holes, locking the bolt in place so you can tighten the nut from the other side without the bolt spinning.

Specifications & Usage:
- Size: 3/8-16 x 2-1/4 (Full Thread)
- Material: Premium 304 (18-8) Stainless Steel
- Quantity: 10 Bolts per Pack (Nuts and washers sold separately)
- Best for: Outdoor decking, gate hinges, playground sets, and heavy-duty furniture repair.

Pro Installation Tip: For a flush finish, pre-drill a 3/8 hole and use a rubber mallet to seat the square neck into the wood before tightening. Using 304 stainless steel nuts and washers is recommended to ensure matching corrosion resistance across your entire assembly."