S-90185A834 5/8"-11 x 5" ASME B18.5, SAE J429 Carriage Bolts

Key Features & Benefits at a Glance

• Superior anti-rotation performance with a square neck design that securely locks into materials, preventing spinning during installation and ensuring a stable, long-lasting connection.
• Exceptional tensile strength and durability with a Grade 5 rating and 120,000 psi tensile strength, providing reliable performance in high-stress and heavy-duty applications.
• Enhanced corrosion resistance from the zinc-plated steel construction, extending the bolt's service life in various industrial environments.
• Optimized for quick and secure installation featuring fully threaded 5/8"-11 UNC coarse threads and a rounded carriage head for easy wrench access and efficient assembly.
• Precision thread fit with Class 2A tolerance ensuring consistent, reliable engagement with nuts and tapped holes, reducing the risk of cross-threading.
• High hardness rating of Rockwell C25, providing excellent wear resistance and maintaining structural integrity under repeated loads.
• Broad compatibility and compliance meeting ASME B18.5 standards, RoHS 3, and REACH regulations, ensuring quality and environmental safety for global industrial use.

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel carriage bolt is engineered to address critical challenges in industrial fastening, such as vibration-induced loosening and corrosion. The square neck design effectively counters rotation when installed in wood, metal, or composite materials, making it ideal for structural applications like trailer assemblies, agricultural equipment, and construction frameworks. Its fully threaded UNC coarse thread and Class 2A fit ensure rapid installation and reliable hold, while the zinc-plated finish provides a protective barrier against moisture and chemicals. With a high tensile strength of 120,000 psi and compliance with ASME B18.5, this bolt delivers consistent performance in demanding environments, reducing maintenance needs and enhancing operational safety for B2B clients in manufacturing, transportation, and infrastructure sectors.

Specification Summary & Compliance

This carriage bolt features a 5/8"-11 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy. It is manufactured in accordance with ASME B18.5 specifications and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, ensuring adherence to environmental and safety regulations. The bolt's material and construction meet the requirements for Grade 5 fastener strength, supporting reliable use in industrial applications.