S-95479A521 M42 DIN 934 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide steel construction, extending service life in harsh industrial environments
• Exceptional load distribution through standard hex profile and 65mm width, preventing joint loosening under vibration
• Precision thread engagement with Class 6H fit and 4.5mm coarse pitch, ensuring reliable fastening in high-stress applications
• Industry-standard compatibility meeting DIN 934 specifications, guaranteeing interchangeability with metric fastener systems
• Enhanced installation efficiency with external hex drive design, allowing quick assembly using standard tools
• Regulatory compliance assurance with RoHS 3 and REACH certification, meeting global environmental standards
• Optimized mechanical performance through right-hand thread design and 34mm height, providing balanced strength-to-weight ratio

Professional Applications & Engineering Value

This M42 hex nut delivers critical engineering solutions for heavy machinery, structural steelwork, and industrial equipment assembly. The black-oxide steel surface treatment creates a protective barrier against oxidation and chemical exposure, significantly reducing maintenance frequency in corrosive environments. With its 4.5mm coarse thread pitch and Class 6H thread fit, this fastener maintains consistent clamping force in high-vibration applications where fine-thread fasteners might loosen. The DIN 934 standard compliance ensures precise dimensional accuracy for seamless integration with existing metric bolt systems, while the external hex drive configuration enables rapid installation and removal using common wrenching tools. These characteristics make it particularly valuable for construction equipment, automotive manufacturing, and heavy industrial applications where reliability and durability are paramount.

Specification Summary & Compliance

Manufactured to DIN 934 standards with Class 6H thread fit tolerance for precise metric thread engagement. The nut features M42 x 4.5mm coarse thread configuration with right-hand thread direction and standard hex profile (65mm width, 34mm height). Full compliance with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as steel alloying element and REACH (EC 1907/2006) regulations (updated January 17, 2023, 233 SVHC). The black-oxide steel construction meets industrial fastener specifications for corrosion resistance and mechanical performance.