Overview
This Grade 12 alloy steel hex nut is engineered for high-strength structural and industrial fastening applications where reliability is non-negotiable. The black oxide finish provides a durable layer of corrosion resistance and a clean, professional appearance suitable for both exposed and concealed assemblies. With its substantial thread size and robust alloy steel construction, this nut is built to maintain clamp force and integrity under extreme loads, high vibration, and demanding environmental conditions, making it a critical component for heavy-duty frameworks and machinery.
Key Features
Manufactured from high-grade alloy steel for exceptional strength and durability Black oxide finish offers enhanced corrosion protection and a uniform matte black appearance Grade 12 classification indicates a high-performance fastener for critical applications Precision-machined threads ensure consistent engagement and reliable torque performance Wide bearing surface distributes load effectively to protect joined materials
Specifications
System of Measurement: Metric Material Grade/Class: Grade 12
Material
Alloy Steel Thread Size: M20 Finish: Black Oxide Width Across Flats: 1.575 inches Package Quantity: 500 units
Applications
Heavy machinery and equipment assembly Structural steel connections in construction and infrastructure Fabrication of transportation equipment, including trucks and trailers Industrial manufacturing lines and conveyor systems Repair and maintenance of high-stress mechanical assemblies








