S-93604A679 3/8"-16 x 2 1/2" ASTM A307, ASTM A153, ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with hot-dipped galvanized steel coating, ideal for outdoor and harsh industrial environments.
• Superior anti-rotation performance due to the integrated square neck design, preventing bolt spinning during installation and ensuring secure fastening.
• High tensile strength of 60,000 psi and Grade 2 classification, providing reliable load-bearing capacity for structural and heavy-duty applications.
• Easy and quick installation with fully threaded UNC coarse pattern and Class 2A thread fit, allowing for smooth engagement and reduced assembly time.
• Wide-rounded head profile offers a larger bearing surface, distributing load evenly and minimizing surface damage.
• Compliance with ASTM A307 and ASME B18.5 standards, ensuring consistent quality, dimensional accuracy, and interchangeability.
• Environmentally safe and regulated with RoHS 3 and REACH compliance, meeting global standards for hazardous substance restrictions.

Professional Applications & Engineering Value

This hot-dipped galvanized steel carriage bolt is engineered to address common challenges in industrial and construction settings, such as corrosion, vibration loosening, and high-stress demands. The square neck securely locks into materials, eliminating rotation during tightening and providing stable fastening in wood, metal, and composite assemblies. With a fully threaded UNC coarse pattern and Class 2A thread fit, it ensures precise engagement and durability under dynamic loads. Ideal for applications like structural framing, machinery, and outdoor equipment, this bolt combines Grade 2 strength and 60,000 psi tensile strength with superior anti-corrosion properties, reducing maintenance and extending service life in demanding environments.

Specification Summary & Compliance

This carriage bolt features a 3/8"-16 UNC coarse thread with Class 2A thread fit for standard dimensional accuracy and ease of use. It meets ASTM A307 and ASME B18.5 specifications, ensuring reliable performance and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for industrial use.