IMSCREWS 1/2"-13 x 3" Heavy-Duty 304 Stainless Steel Carriage Bolts (2 PCS)

Industrial Strength for Structural Timber Connections
The IMSCREWS 1/2" x 3" carriage bolt is engineered for projects requiring high shear resistance and maximum structural support. With a robust 1/2-inch diameter and a versatile 3-inch length, these bolts are well-suited for high-load joints where stability is critical, such as securing heavy-duty metal brackets to timber or reinforcing structural deck frames. Built for durability, they offer the stability necessary for long-term use in marine docks, outdoor bridges, and heavy landscaping projects.

High Durability and Safety-Focused Design
Forged 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 clean appearance that reduces snagging hazards, making them an ideal choice for public railings, heavy furniture, and play structures. The integrated square neck prevents rotation, allowing for easy, one-sided installation with a single wrench from the nut side.

Specifications:
- Thread: 1/2"-13 Coarse; Length: 3" (Under Head)
- Material: 304 (18-8) Stainless Steel; Full Thread

FAQ:
Q: Drill bit size? A: A 1/2" bit provides a snug, structural fit.
Q: Coastal safe? A: Yes, 304 SS offers high resistance to rust and salt air corrosion.

Pro-Tips:
1. Ensure the square neck is fully seated in the pre-drilled hole for a secure, anti-spin installation.
2. Pair with a heavy-duty flat washer 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 3-inch shank offers maximum grip and enhanced fastening power along its entire length, making it ideal for deep structural timber and heavy DIY projects.
• 304 Marine Grade Stainless: Forged from premium 18-8 (304) Stainless Steel for superior corrosion defense. Essential for outdoor decks, docks, and ACQ pressure-treated lumber applications.
• Industrial Structural Strength: The robust 1/2 diameter delivers massive shear resistance. At 3 long, these bolts are Well-suited for through-bolting thick posts, beams, and structural framing.
• 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.

Specifications

• ASIN: B0F2F8PRTZ
• Internal SKU: IMS0898
• Size: 1/2"-13 x 3"
• Material: Stainless Steel
• Finish: Stainless Steel
• Head Style: Round
• Package Quantity: 2