S-92356A311 1/4"-20 x 4 1/4" ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Exceptional anti-rotation performance thanks to the square neck design that prevents spinning during installation
• High tensile strength of 70,000 PSI ensures reliable performance under heavy loads and vibration
• Rockwell B55 hardness provides excellent durability and resistance to wear and deformation
• Wide rounded carriage head offers enhanced bearing surface and prevents pull-through in soft materials
• Fully threaded UNC coarse thread design allows for faster installation and better performance in wood and soft materials
• Class 2A thread fit ensures smooth assembly while maintaining secure fastening integrity

Professional Applications & Engineering Value

This 18-8 stainless steel carriage bolt delivers exceptional engineering value across multiple industrial sectors. The combination of 70,000 PSI tensile strength and Rockwell B55 hardness makes it ideal for structural applications where vibration resistance and long-term reliability are critical. The square neck design provides superior anti-rotation performance, eliminating the need for additional locking mechanisms in wood-to-metal and structural steel connections. The fully threaded 1/4"-20 UNC coarse thread ensures rapid installation in construction, agricultural equipment, and transportation applications, while the wide rounded carriage head distributes clamping force effectively, preventing damage to connected materials. This bolt is particularly valuable in outdoor and corrosive environments where stainless steel's corrosion resistance extends service life and reduces maintenance costs.

Specification Summary & Compliance

This heavy-duty carriage bolt features precision Class 2A thread fit with 1/4"-20 UNC coarse threading and right-hand thread direction. Manufacturing complies with ASME B18.5 standards for dimensional accuracy and performance requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial applications worldwide.