IMSCREWS 3/8"-16 x 1-1/4" Heavy-Duty 304 Stainless Steel Carriage Bolts (10 PCS)

Industrial Strength for Heavy Structural and Marine Projects
The IMSCREWS 3/8" x 1-1/4" 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 precise 1.25-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.

Superior Durability and Safety-Focused Design
Forged from premium 18-8 (304) stainless steel, these fasteners offer superior resistance to rust and corrosion, even when exposed to harsh outdoor or humid environments. The smooth round head creates a clean, tamper-resistant look that minimizes snagging hazards, making them a safe choice for high-traffic areas like boardwalks, playground sets, and outdoor furniture. The integrated square neck locks the bolt into place, preventing spinning and allowing for easy, one-sided tightening from the nut side with a single wrench.

Specifications:
- Thread Size: 3/8"-16 Coarse (UNC); Length: 1-1/4" (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 wood fibers.

Key Features

• High-Torque 3/8 Diameter: The reinforced 3/8-inch shank is engineered for heavy-duty structural joints, providing superior shear resistance and rock-solid stability for high-stress projects.
• Compact Precision Length: The 1.25-inch length is ideal for joining 1/2 panels or fastening thick metal plates to timber, ensuring a flush, professional finish without hazardous protrusion.
• Marine-Grade 304 Stainless: Forged from premium 18-8 (304) stainless steel, ensuring maximum rust protection in coastal environments, humid gardens, and corrosive treated lumber.
• Tamper-Resistant Security: The smooth, drive-free round head offers a clean aesthetic while preventing unauthorized removal¡ªan essential for public benches, gates, and exterior fixtures.
• Self-Locking Square Neck: The precision square shoulder bites firmly into wood fibers, locking the bolt in place for effortless, one-sided installation using a single wrench.

Specifications

• ASIN: B0F2F2R9TX
• Internal SKU: IMS0835
• Size: 3/8"-16 x 1-1/4"
• Material: Stainless Steel
• Finish: Stainless Steel
• Head Style: Round
• Package Quantity: 10