IMSCREWS 1/2"-13 x 1-1/4" Heavy-Duty 304 Stainless Steel Carriage Bolts (5 PCS)

Substantial Strength for Heavy Structural and Marine Applications
The IMSCREWS 1/2" x 1-1/4" carriage bolt is engineered for high-load structural projects that demand maximum shear resistance in a compact form. With a robust 1/2-inch diameter and a precise 1.25-inch length, these bolts are the ideal choice for securing heavy-duty brackets, dock hardware, and thick metal plates. The strategic length is perfectly suited for joining 3/4-inch actual thickness materials while leaving sufficient thread for heavy-duty washers and nuts to ensure a snug, permanent connection. Built for longevity, they offer the structural integrity required for heavy machinery and commercial-grade timber framing.

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 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 playground equipment, public walkways, and residential decks. The integrated square neck locks the bolt into place during installation, preventing spinning and allowing for easy, one-sided tightening from the nut side with a single wrench.

Specifications:
Thread Size: 1/2"-13 Coarse (UNC); Length: 1-1/4" (Under Head); Material: 304 (18-8) Stainless Steel; Full Thread

Pro-Tips:
1. Use a 1/2" drill bit to ensure a snug, structural fit for the square neck.
2. Pair with 304 SS flat washers and hex nuts on the nut side to distribute heavy structural loads and protect the material surface.

Key Features

• High-Torque 1/2 Diameter: The heavy-duty 1/2-inch shank offers substantial shear strength for critical load-bearing joints in structural timber and steel.
• Precision 1.25 Length: Specifically sized for securing heavy-duty metal brackets or connecting 1-inch thick lumber with precise thread engagement.
• Corrosion-Resistant 304 SS: Forged from 18-8 (304) stainless steel, offering high durability in humid outdoor environments and with treated lumber.
• Smooth Safety Head: The rounded, drive-free head minimizes snagging hazards while providing a professional, clean finish for railings and benches.
• Anti-Spin Square Neck: The integrated square shoulder bites into the material to prevent rotation, enabling efficient one-sided installation from the nut side.

Specifications

• ASIN: B0F2F88Q4W
• Internal SKU: IMS0880
• Size: 1/2"-13 x 1-1/4"
• Material: Stainless Steel
• Finish: Stainless Steel
• Head Style: Round
• Package Quantity: 5