Overview
This Grade 8 carbon steel hex nut is engineered for high-strength, precision applications where superior clamping force and exceptional resistance to vibration and loosening are critical. It conforms to the GB6171 standard, guaranteeing dimensional consistency and reliable performance in the most demanding assemblies. The fine thread pitch allows for finer adjustment and creates a more secure joint compared to coarse-thread alternatives, making it ideal for situations involving dynamic loads or thin materials. A durable black oxide finish is applied to enhance corrosion resistance and provide a professional appearance.
Key Features
Manufactured from high-strength Grade 8 carbon steel for maximum durability Fine thread pitch design for precise adjustment and enhanced vibration resistance Black oxide finish offers a layer of protection against rust and corrosion Conforms to GB6171 dimensional standards for guaranteed compatibility and fit Ideal for use in high-stress, high-vibration industrial and construction environments
Specifications
System of Measurement: Metric Material Grade/Class: Grade 8
Material
Carbon Steel Thread Size: M30x2 Finish: Black Oxide Width Across Flats: 1.181 inches Package Quantity: 36
Applications
Heavy machinery and equipment assembly Structural steel connections in construction Precision automotive and transportation components Industrial fabrication requiring secure, fine-adjustment fastening Infrastructure projects demanding high-strength, reliable fasteners








