S-98498A211 M45 ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Superior Load Distribution - Extra wide 75mm hex profile spreads clamping force evenly, reducing stress concentrations and preventing joint failure in heavy machinery
• High-Strength Performance - ASTM Grade 2H certification ensures exceptional tensile strength and consistent performance under extreme vibration and load conditions
• Precision Thread Engagement - Class 6H thread fit guarantees accurate mating with bolts, minimizing backlash and maintaining joint integrity over time
• Enhanced Durability - Made from high-quality steel with coarse 4.5mm pitch threads that resist stripping and maintain grip in high-vibration environments
• Industry Compliance - Meets ASTM A194 manufacturing standards while being fully REACH and RoHS 3 compliant for safe industrial use
• Optimized Installation - External hex drive design with extra wide profile provides superior torque transmission and easier installation with standard tools
• Reliable Metric Sizing - M45 coarse thread specification ensures compatibility with standard metric bolt systems worldwide

Professional Applications & Engineering Value

This heavy-duty M45 hex nut delivers critical engineering solutions for industrial applications where joint integrity is paramount. The ASTM Grade 2H steel construction provides exceptional resistance to vibration-induced loosening, making it ideal for heavy machinery, structural steel connections, and industrial equipment subjected to dynamic loads. The extra wide 75mm profile significantly increases bearing surface area, distributing clamp load more effectively to prevent material deformation and maintain bolted joint stability. With coarse metric threads (4.5mm pitch), these nuts offer faster assembly and superior performance in environments where fine debris or corrosion might compromise finer thread forms. The Class 6H thread fit ensures precise engagement with mating bolts, eliminating play that could lead to premature fatigue failure in critical connections.

Specification Summary & Compliance

This M45x4.5mm extra wide hex nut features precision Class 6H thread fit with right-hand metric coarse threads meeting international standards. Manufactured in compliance with ASTM A194 specifications and certified to ASTM Grade 2H for high-strength applications. The fastener demonstrates full compliance with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations, ensuring safe industrial use. Dimensions include 75mm width across flats and 45mm height for optimal load distribution characteristics.