Overview
This Grade 8 carbon steel hex nut is engineered for heavy-duty structural and machinery applications requiring superior strength and reliability. Designed to metric M42 thread specifications, it features a substantial 2.5-inch width across flats for secure tool engagement. The black oxide finish provides a baseline of corrosion protection suitable for general industrial environments. Manufactured to exacting Grade 8 standards, this nut delivers consistent performance in high-load, high-vibration assemblies where fastener integrity is critical.
Key Features
Manufactured from high-strength Grade 8 carbon steel Metric M42 thread size for international compatibility 2.5-inch width across flats for secure wrenching Black oxide surface finish for corrosion resistance Meets stringent Grade 8 mechanical property standards Suitable for high-stress and high-vibration environments
Specifications
System of Measurement: Metric Material Grade/Class: Grade 8
Material
Carbon Steel Thread Size: M42 Finish: Black Oxide Width Across Flats: 2.5 inches Package Quantity: 20 units
Applications
Heavy structural steel construction Industrial machinery assembly and maintenance Large-scale fabrication projects Infrastructure and bridge work Manufacturing equipment requiring high-strength fasteners Repair and retrofit of existing metric-threaded assemblies








