S-90185A270 3/4"-10 x 7" ASME B18.5, SAE J429 Carriage Bolts

Key Features & Benefits at a Glance

• Superior load-bearing capacity with Grade 5 classification and 120,000 psi tensile strength for demanding structural applications
• Enhanced corrosion resistance through zinc-plated steel construction, extending service life in harsh environments
• Secure anti-rotation performance with square neck design that prevents spinning during installation and use
• Optimized thread engagement through UNC coarse threading and Class 3A fit for faster assembly and reliable connections
• Exceptional durability with Rockwell C25 hardness rating maintaining structural integrity under repeated stress
• Versatile rounded head profile providing smooth finished appearance while distributing clamping force effectively
• Full regulatory compliance meeting ASME B18.5 standards and environmental directives including RoHS 3 and REACH

Professional Applications & Engineering Value

This Grade 5 carriage bolt delivers critical engineering solutions for industrial applications where vibration resistance and structural integrity are paramount. The zinc-plated steel construction provides essential corrosion protection for outdoor equipment, agricultural machinery, and construction frameworks exposed to environmental elements. The square neck carriage bolt design eliminates rotation during torque application, making it ideal for wood-to-metal connections in trailer manufacturing, structural steel assemblies, and heavy equipment maintenance. With fully threaded UNC coarse spacing and Class 3A thread fit, installation efficiency is maximized while maintaining precise tolerance control in high-volume production environments. The combination of 120,000 psi tensile strength and Rockwell C25 hardness ensures reliable performance in load-bearing applications where fastener failure is not an option.

Specification Summary & Compliance

This carriage bolt maintains precise dimensional accuracy with Class 3A thread fit and UNC coarse thread spacing (3/4"-10) manufactured to exacting standards. The fastener complies with ASME B18.5 specifications SAE J429, ensuring interchangeability and reliability across industrial applications. Environmental compliance is verified through RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance (06/10/2022 224 SVHC), meeting international regulatory requirements for hazardous substance restrictions.