Overview
This Grade 8 carbon steel hex flange nut is engineered for high-strength, permanent fastening in demanding mechanical and structural assemblies. It combines a standard hex body with an integrated, washer-style flange that distributes clamping force over a wider area, reducing surface pressure and improving joint integrity. The M20 coarse thread ensures robust engagement with compatible bolts, while the black oxide finish provides a baseline defense against corrosion. Manufactured to DIN 6331 specifications, this nut is a reliable component for applications requiring a secure, vibration-resistant connection.
Key Features
Constructed from high-strength Grade 8 carbon steel for superior load-bearing capacity Integrated flange acts as a built-in washer, eliminating the need for a separate component Wide bearing surface helps prevent loosening under dynamic loads and vibration Black oxide finish offers a durable, corrosion-resistant layer for general protection Coarse M20 thread design facilitates easier and faster assembly in industrial settings
Specifications
System of Measurement: Metric Material Grade/Class: Grade 8
Material
Carbon Steel Thread Size: M20 Finish: Black Oxide Width Across Flats: 1.26 inches Package Quantity: 100 units
Applications
Heavy-duty machinery and equipment assembly Structural steel frameworks and construction Industrial conveyor systems and material handling equipment Agricultural and mining machinery maintenance Transportation and trailer manufacturing








