S-92356A312 5/16"-18 x 4 1/4" ASME B18.5 Carriage Bolts
Carriage Bolts
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Basic Information
Head Parameters
Neck & Shank Parameters
Dimension Parameters
Thread Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh environments and extended service life.
- Exceptional mechanical strength with a 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under high stress.
- Secure, non-rotating installation ensured by the integrated square neck design, which locks the bolt in place during tightening.
- Wide, rounded head provides a larger bearing surface for enhanced load distribution and a finished appearance.
- Easy and quick assembly with coarse UNC threading and Class 2A fit, facilitating faster installation in a variety of materials.
- Full threading along the 4-1/4" length offers maximum flexibility in grip range and clamping applications.
- Regulatory compliance and quality assurance through adherence to ASME B18.5, RoHS 3, and REACH standards.
Professional Applications & Engineering Value
This 18-8 stainless steel carriage bolt is engineered to solve critical fastening challenges in demanding industrial and construction settings. The square neck is a key feature that prevents rotation when installed in wood or metal, eliminating the need for a second tool to hold the bolt head and speeding up assembly. The coarse UNC thread (5/16"-18) with a Class 2A fit is designed for rapid installation and superior performance in softer materials or where vibration resistance is crucial. The combination of high tensile strength (70,000 psi) and excellent corrosion resistance makes it a reliable, long-lasting solution for structural connections, trailer builds, agricultural equipment, and outdoor frameworks, ensuring joint integrity and reducing maintenance frequency.
Specification Summary & Compliance
This bolt features a 5/16"-18 UNC thread with a Class 2A tolerance for consistent, reliable fit. It is manufactured in compliance with the ASME B18.5 standard for dimensional accuracy and performance. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets stringent environmental and safety regulations for hazardous substances.
