S-98498A500 M20 ASTM A194, DIN 6915 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional load distribution thanks to the extra wide 33mm profile, minimizing surface pressure and preventing material damage
• Superior tensile strength and reliability with ASTM Grade 2H certification, ensuring secure fastening in high-stress applications
• Optimized for rapid assembly with a coarse metric thread (M20 x 2.5mm) and Class 6H fit, reducing installation time
• Enhanced durability and corrosion resistance from high-quality steel construction, extending service life in harsh environments
• Guaranteed dimensional consistency through compliance with DIN 6915 and ASTM A194 standards, ensuring perfect fit and interchangeability
• Safe for regulated industries with full REACH and RoHS 3 compliance, meeting strict environmental and safety standards
• Secure external hex drive provides excellent grip for standard tools, preventing slippage during tightening

Professional Applications & Engineering Value

This heavy-duty hex nut is engineered to solve critical challenges in industrial and construction applications where joint integrity is paramount. The extra wide profile and ASTM Grade 2H steel construction work in tandem to distribute clamping force over a larger area, effectively preventing loosening under dynamic loads and vibration—a common failure point in machinery and structural steelwork. The M20 coarse thread with a 2.5 mm pitch and Class 6H thread fit ensures quick, reliable engagement, even in field conditions where alignment may be imperfect. By meeting DIN 6915 and ASTM A194 specifications, this nut delivers predictable performance for engineers designing bolted connections in heavy equipment, bridgework, and plant infrastructure, providing a reliable, standardized solution that reduces maintenance and downtime.

Specification Summary & Compliance

This nut features a metric M20 x 2.5 mm coarse thread with a Class 6H thread fit and right-hand thread direction. Its dimensions are precisely 33 mm in width and 20 mm in height. Manufactured in accordance with ASTM A194 and DIN 6915 standards, it carries an ASTM Grade 2H strength rating. The product is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental directives.