S-93604A671 3/8"-16 x 1 1/2" ASTM A307, ASTM A153, ASME B18.5 Carriage Bolts
Carriage Bolts
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Neck & Shank Parameters
Dimension Parameters
Thread Parameters
Material & Strength Parameters
Finish & Compliance Parameters
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with hot-dipped galvanized steel coating, ideal for outdoor and harsh industrial environments
- Reliable anti-rotation performance due to the square neck design that prevents spinning during installation and use
- High tensile strength of 60,000 psi and Grade 2 classification for dependable load-bearing in structural applications
- Coarse UNC threading ensures quick, easy assembly and reduced cross-threading risks in wood and metal
- Wide rounded head profile distributes clamping force evenly, minimizing surface damage and improving aesthetics
- Full threading allows for maximum adjustability and secure fastening across the entire bolt length
- Rockwell B70 hardness provides excellent durability and resistance to wear in high-stress conditions
Professional Applications & Engineering Value
This hot-dipped galvanized carriage bolt is engineered to address common challenges in construction, agricultural machinery, and outdoor infrastructure. The square neck securely locks into materials, eliminating rotation during torque application—critical for wood-to-metal connections and framing where vibration is a concern. Made from Grade 2 steel with a coarse UNC thread, it offers robust performance in timber, steel assemblies, and equipment requiring anti-rotation features. The galvanized coating provides long-term protection against rust and corrosion, reducing maintenance costs in exposed environments. Fully compliant with industry standards, it ensures reliability in heavy-duty carriage bolt applications, from trailer building to structural supports.
Specification Summary & Compliance
This bolt adheres to Class 2A thread fit for consistent engagement and meets ASTM A307 and ASME B18.5 specifications for dimensional accuracy and manufacturing quality. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material sustainability.
