S-93604A695 3/8"-16 x 6 1/2" ASTM A307, ASTM A153, ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with hot-dipped galvanized steel coating for extended service life in harsh environments
• Enhanced anti-rotation performance through integrated square neck design that prevents spinning during installation
• Reliable load-bearing capacity with Grade 2 strength rating and 60,000 psi tensile strength for heavy-duty applications
• Optimized thread engagement with UNC coarse threading and Class 2A fit ensuring secure fastening in various materials
• Excellent mechanical durability backed by Rockwell B70 hardness for resistance against deformation under stress
• Versatile partial threading allowing both secure clamping and smooth shank penetration through multiple material layers
• Regulatory compliance assurance meeting international environmental and safety standards including RoHS 3 and REACH

Professional Applications & Engineering Value

This hot-dipped galvanized steel carriage bolt delivers exceptional engineering value in demanding industrial settings where corrosion resistance and anti-rotation performance are critical. The square neck design effectively eliminates rotational movement during installation and service, making it ideal for wood-to-metal connections, structural framing, and heavy equipment assembly. The Grade 2 strength classification combined with 60,000 psi tensile strength provides reliable performance in load-bearing applications, while the partial threading allows for optimal clamp load distribution. The UNC coarse thread pattern ensures quick installation and superior holding power in wood, plastic, and softer metals, making these carriage bolts particularly valuable in construction, agricultural machinery, and outdoor infrastructure projects where environmental exposure is a concern.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC 3/8"-16 coarse threading. Complies with ASTM A307 for carbon steel bolts and ASME B18.5 for dimensional requirements. Meets ASTM A153 specifications for hot-dip galvanized coating. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial applications.