S-92356A537 1/4"-20 x 1/2" 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 the bolt from spinning during installation and under vibration.
• Excellent corrosion resistance provided by 18-8 Stainless Steel, ensuring long-term reliability in harsh or outdoor environments.
• High tensile strength of 70,000 psi and Rockwell B55 hardness for dependable performance in heavy-duty and high-stress applications.
• Easy installation and secure fit with coarse UNC threading and Class 2A thread fit, offering reliable engagement and resistance to loosening.
• Wide rounded head design distributes clamping force effectively, reducing the risk of surface damage and providing a finished appearance.
• Full threading allows for maximum adjustability and secure fastening across a wide range of material thicknesses.
• Compliance with industry standards including ASME B18.5, RoHS 3, and REACH, ensuring safety, quality, and environmental responsibility.

Professional Applications & Engineering Value

This 1/4"-20 UNC Carriage Bolt is engineered to solve critical fastening challenges in demanding industrial settings. The 18-8 Stainless Steel construction provides exceptional resistance to rust and corrosion, making it ideal for outdoor machinery, marine equipment, and chemical processing plants where moisture and corrosive agents are present. The combination of a wide rounded head and square neck ensures the bolt remains fixed during tightening, eliminating rotation in wood, metal, or composite assemblies. With a 70,000 psi tensile strength and coarse UNC thread, it delivers reliable performance in structural applications, agricultural equipment, and transportation infrastructure, reducing maintenance needs and enhancing operational safety. Its fully threaded design accommodates various material thicknesses, offering flexibility in assembly while maintaining a secure, vibration-resistant connection.

Specification Summary & Compliance

This carriage bolt features precise Class 2A thread fit and adheres to UNC coarse thread standards with a size of 1/4"-20. It is manufactured in accordance with ASME B18.5 specifications, ensuring dimensional accuracy and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in environments requiring strict environmental and health standards.