Overview
This fine-thread hex nut is engineered for heavy-duty structural and machinery applications where superior tensile strength and reliable fastening are critical. Manufactured from high-grade carbon steel, it meets rigorous Grade 8 performance standards, ensuring integrity under high stress and load conditions. The fine-thread design provides enhanced precision for adjustment and offers greater resistance to loosening under vibration compared to coarse-thread alternatives. A protective black oxide finish is applied to inhibit rust and corrosion in demanding operational environments. This nut is supplied in a convenient six-pack, ideal for maintenance kits or multi-point assembly projects.
Key Features
Constructed from high-strength Grade 8 carbon steel Fine-thread (M56-4) design for precise adjustment and vibration resistance Black oxide finish for basic corrosion protection and a clean appearance 2.2-inch width across flats for secure, standard wrench engagement Package quantity of six for project efficiency
Specifications
System of Measurement: Metric Material Grade/Class: Grade 8
Material
Carbon Steel Thread Size: M56-4 Finish: Black Oxide Width Across Flats: 2.2 in Package Quantity: 6
Applications
Heavy machinery assembly and maintenance Structural steel construction and framing High-vibration equipment in industrial and manufacturing settings Infrastructure projects requiring high-strength bolted connections Repair and overhaul operations in maintenance, repair, and operations (MRO) facilities








