S-92356A572 1/4"-20 x 8" ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior anti-rotation performance with a square neck design that securely locks into materials, preventing bolt spin during installation and under vibration.
• Excellent corrosion resistance provided by 18-8 Stainless Steel construction, ensuring long-term reliability in harsh or outdoor industrial environments.
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness, offering dependable load-bearing capacity for heavy-duty applications.
• Secure and easy coarse threading with UNC 1/4"-20 Class 2A threads, enabling quick assembly and robust fastening in wood and metal.
• Optimized head design featuring a wide, rounded carriage head for a finished appearance and reduced risk of pull-through in softer materials.
• Regulatory compliance assurance by meeting ASME B18.5 standards and being RoHS 3 and REACH compliant, ensuring safety and environmental responsibility.
• Versatile partial threading allowing unthreaded shank to bear shear loads effectively, ideal for structural and machinery connections.

Professional Applications & Engineering Value

This 1/4"-20 carriage bolt is engineered to address critical industrial fastening challenges, particularly where vibration resistance and material integrity are paramount. The square neck design eliminates the need for additional locking mechanisms by embedding securely into the mounting surface, providing reliable anti-rotation performance in wood-to-metal and structural timber applications. Manufactured from 18-8 Stainless Steel, it resists rust and corrosion in demanding environments such as construction, agricultural equipment, and outdoor frameworks. The UNC coarse thread and Class 2A thread fit ensure easy installation and consistent clamping force, while the partially threaded configuration enhances shear strength. This bolt delivers long-term durability and compliance with industry standards, making it a trusted choice for engineers and procurement specialists.

Specification Summary & Compliance

This carriage bolt adheres to precise dimensional and performance criteria, including a 1/4"-20 UNC coarse thread with Class 2A thread fit for standard tolerance and compatibility. It is manufactured in compliance with ASME B18.5 specifications, ensuring consistent quality and interchangeability. The product is confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.