S-93180A473 3/8"-16 x 4 1/2" ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 316 stainless steel construction, ideal for harsh environments and outdoor applications
• Exceptional tensile strength rated at 70,000 psi ensures reliable performance under heavy loads and stress
• Secure anti-rotation locking with the integrated square neck design that prevents spinning during installation
• Optimized for quick assembly with coarse UNC threading and Class 2A fit, providing smooth engagement and reduced installation time
• Enhanced durability and wear resistance from Rockwell B55 hardness, extending service life in demanding applications
• Broad compatibility and safety with full compliance to ASME B18.5 standards, RoHS 3, and REACH regulations
• Versatile rounded head design offers a wide bearing surface for secure fastening in wood and metal assemblies

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this 316 stainless steel carriage bolt delivers unmatched reliability in corrosive or high-moisture environments, such as marine, chemical processing, and construction. The fully threaded UNC coarse thread design ensures rapid installation and strong holding power, while the square neck effectively counters rotation in pre-drilled holes, eliminating the need for additional locking mechanisms. With a rounded head profile and 4-1/2" length, it provides a flush finish and broad load distribution, making it ideal for securing timber, machinery, and structural components where vibration resistance and long-term integrity are critical.

Specification Summary & Compliance

This carriage bolt adheres to precise dimensional standards with Class 2A thread fit and UNC 3/8"-16 coarse threading, ensuring consistent performance and interchangeability. Manufactured in compliance with ASME B18.5 specifications, it meets rigorous industry requirements for quality and safety. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming its suitability for global markets and environmentally conscious operations.