IMSCREWS 3/8"-16 x 1-1/2" Heavy-Duty 304 Stainless Steel Carriage Bolts (20 PCS)

Substantial Strength for Heavy Structural and Marine Connections
The IMSCREWS 3/8" x 1-1/2" carriage bolt is engineered for heavy-duty structural projects that demand maximum load-bearing capacity and a professional finish. With a robust 3/8-inch diameter and a precision 1.5-inch length, these bolts are the ideal choice for securing industrial brackets, dock hardware, and heavy timber-to-metal connections. The full thread design provides maximum versatility for a snug fit, ensuring structural integrity in both residential construction and demanding industrial or marine applications.

High Durability and Safety-Focused Design
Forged from premium 18-8 (304) stainless steel, these fasteners offer superior resistance to rust and corrosion in coastal or humid environments. The smooth round head creates a clean, tamper-resistant look that reduces snagging hazards, making them a safe choice for high-traffic areas like boardwalks, playground equipment, and residential decks. The integrated square neck prevents the bolt from spinning during installation, allowing for easy, one-sided fastening with a single wrench from the nut side.

Specifications:
- Thread Size: 3/8"-16 Coarse (UNC); Length: 1-1/2" (Measured from Under Head)
- Material: 304 (18-8) Stainless Steel; Full Thread

Pro-Tips:
1. Use a 3/8" drill bit to ensure a snug, structural fit for the square neck.
2. Pair with stainless steel flat washers and hex nuts on the nut side to distribute heavy structural loads and protect material surfaces.

Key Features

• Industrial 3/8 Diameter: Engineered for maximum structural integrity, the 3/8-inch shank offers superior shear resistance for high-load joints in decks, piers, and heavy timber framing.
• The 1.5-Inch Standard: The Designed for length for through-bolting two layers of standard 3/4 boards or securing heavy metal brackets to 2x lumber with a clean, professional finish.
• Marine-Grade 304 Stainless: Forged from premium 18-8 (304) stainless steel, providing top-tier defense against rust in saltwater air, humid gardens, and with treated lumber.
• Snag-Free Safety Head: The smooth, rounded dome head eliminates sharp edges and exposed drive slots¡ªWell-suited for child-friendly play sets, public benches, and high-traffic docks.
• Self-Locking Anti-Spin Neck: The precision square shoulder bites deep into wood fibers, locking the bolt so you can easily tighten the nut with one wrench from the opposite side.

Specifications

• ASIN: B0F2F9RRG1
• Internal SKU: IMS0839
• Size: 3/8"-16 x 1-1/2"
• Material: Stainless Steel
• Finish: Stainless Steel
• Head Style: Round
• Package Quantity: 20