S-92356A556 1/4"-20 x 3 1/2" ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh environments and outdoor applications
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable heavy-duty performance
• Secure anti-rotation locking provided by the integrated square neck design, preventing bolt spin during installation and use
• Wide rounded head profile distributes clamping force effectively and reduces surface damage to materials
• Easy installation and removal with UNC coarse threading and Class 2A thread fit for smooth engagement
• Full thread coverage along the entire 3-1/2" length provides maximum flexibility in material thickness and fastener engagement
• Regulatory compliance assurance meeting ASME B18.5 standards plus RoHS 3 and REACH environmental regulations

Professional Applications & Engineering Value

This heavy-duty carriage bolt delivers exceptional engineering value across industrial applications where corrosion resistance and structural integrity are paramount. The 18-8 stainless steel composition provides reliable performance in marine environments, food processing facilities, and outdoor construction where moisture and chemicals pose challenges. The square neck design solves critical anti-rotation problems in wood-to-metal and structural connections, eliminating the need for additional locking mechanisms. With fully threaded UNC coarse pattern and Class 2A thread fit, installation efficiency is maximized while maintaining precise tolerances. The combination of 70,000 psi tensile strength and Rockwell B55 hardness ensures these carriage bolts withstand vibration and dynamic loads in machinery, transportation equipment, and structural frameworks.

Specification Summary & Compliance

This carriage bolt features precision 1/4"-20 UNC coarse threading with Class 2A thread fit tolerances for optimal engagement. Manufacturing and dimensional specifications conform to ASME B18.5 standards, ensuring interchangeability and reliability. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial components. Physical dimensions include a 0.594" head diameter, 0.145" head height, and 3-1/2" length with square neck measuring 0.16" in length and 0.26" in width.