S-98930A321 M16 x 60 mm ASME B18.5, ISO 8678 Carriage Bolts

Key Features & Benefits at a Glance

• Superior Anti-Rotation Performance: Integrated square neck design securely locks into materials, preventing bolt spin during installation and vibration, ensuring reliable long-term fastening.
• Exceptional Tensile Strength: Class 8.8 strength rating and 120,000 psi tensile strength provide high load-bearing capacity for demanding industrial and structural applications.
• Enhanced Durability & Wear Resistance: Steel construction with Rockwell C22 hardness offers excellent resistance to deformation and wear under stress, extending service life.
• Wide Rounded Head Design: Provides a larger bearing surface for improved load distribution and reduced risk of surface damage, ideal for wood and soft materials.
• Coarse Thread Advantage: M16 x 2mm coarse threading ensures faster installation, easier alignment, and reliable performance in a variety of materials.
• Full Threading for Maximum Grip: Fully threaded shank allows for adjustable engagement depth, offering versatile fastening solutions across different material thicknesses.
• Broad Regulatory Compliance: Meets ASME B18.5 and ISO 8678 standards, and is RoHS 3 and REACH compliant, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This M16 carriage bolt is engineered to solve critical fastening challenges in heavy-duty applications. The high-grade steel construction and Class 8.8 strength ensure it can withstand significant tensile and shear forces, making it ideal for structural frameworks, machinery assembly, and construction projects. The combination of a wide rounded head and square neck is specifically designed to prevent rotation when tightening, a common issue in wood-to-metal or composite material joints. This feature is vital for maintaining joint integrity in vibrating environments like agricultural equipment, trailer building, and industrial platforms. The fully threaded metric coarse thread (M16x2mm) with a Class 6g thread fit provides excellent grip and ease of installation, reducing assembly time and improving reliability in demanding engineering scenarios.

Specification Summary & Compliance

This carriage bolt features precise metric dimensions: M16 thread size with a 2mm coarse pitch and a Class 6g thread fit for standard tolerance. It is manufactured in compliance with the ASME B18.5 standard where identified as ISO 8678. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to strict environmental and safety regulations for hazardous substances.