S-93180A641 1/2"-13 x 4" ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction, ideal for marine, chemical, and outdoor applications.
• Enhanced anti-rotation and security with the square neck design, preventing the bolt from turning during installation and under vibration.
• High tensile strength of 70,000 psi and Rockwell B55 hardness for reliable performance in heavy-duty and structural fastening.
• Easy, quick installation with coarse UNC threading and Class 2A thread fit, ensuring smooth engagement and consistent clamping force.
• Wide, rounded head design distributes load effectively, reducing surface damage and providing a finished appearance.
• Full threading along the 4" length offers versatile positioning and allows for use with a wide range of material thicknesses and nut placements.
• Compliance with ASME B18.5, RoHS 3, and REACH ensures consistent quality, safety, and environmental responsibility for industrial use.

Professional Applications & Engineering Value

These 316 stainless steel carriage bolts are engineered to address common industrial challenges such as corrosion, vibration loosening, and high-stress demands. The square neck securely locks into materials, eliminating rotation during torque application—critical in wood-to-metal fastening, construction frameworks, and machinery assembly. The fully threaded 1/2"-13 UNC coarse thread design ensures strong grip and ease of use in varied thicknesses, while the wide rounded head minimizes pull-through in softer materials. Ideal for heavy-duty applications in marine equipment, chemical processing plants, and infrastructure projects, these bolts deliver long-term reliability and reduced maintenance, backed by their high tensile strength and corrosion-resistant properties.

Specification Summary & Compliance

This product features precise Class 2A thread fit and adheres to UNC coarse thread standards with a 1/2"-13 thread size. Manufacturing and dimensional accuracy comply with ASME B18.5 specifications. The bolts are confirmed to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements, ensuring they are free of restricted substances and safe for industrial and international use.