S-91861A310 M20 DIN 6915, ISO 4775 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional load distribution thanks to the extra wide 32mm profile that reduces surface pressure and prevents material deformation
• Superior corrosion resistance provided by zinc-plated steel construction, extending service life in harsh industrial environments
• Maximum mechanical strength with Class 10 rating, ensuring reliable performance under high-stress applications
• Precise thread engagement through Class 6H thread fit, minimizing the risk of cross-threading and ensuring secure fastening
• Enhanced installation efficiency with coarse metric thread (M20 x 2.5mm) that allows for quicker assembly compared to fine threads
• Industry-standard compliance meeting DIN 6915 and ISO 4775 specifications for guaranteed interchangeability and quality
• Environmental regulation adherence with RoHS 3 and REACH compliance, ensuring safe usage across global markets

Professional Applications & Engineering Value

This heavy-duty hex nut delivers critical engineering solutions where standard fasteners fail. The zinc-plated steel construction combined with extra wide profile addresses common failure points in structural applications by distributing clamp load over larger surface areas, preventing joint loosening from vibration and thermal cycling. The M20 coarse thread configuration enables rapid installation in heavy machinery, construction equipment, and transportation infrastructure while maintaining Class 10 strength integrity. Engineered to DIN 6915 and ISO 4775 standards, this nut provides reliable performance in bolted connections requiring high preload tolerance and fatigue resistance, making it ideal for critical assemblies in manufacturing plants, bridge construction, and mining equipment where failure is not an option.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 6H thread fit tolerance ensuring consistent engagement with mating components. The nut conforms to DIN 6915 and ISO 4775 manufacturing specifications for heavy hex nuts, guaranteeing dimensional accuracy and mechanical properties. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming absence of restricted hazardous substances. The metric coarse thread (M20 x 2.5mm) with right-hand direction follows international threading standards for broad compatibility across global industrial applications.