1/3High-Strength Black Oxide Hexagon Nut
Designed for high-load structural joints and heavy-duty industrial assembly, our Class 8 Black Oxide Hexagon Nuts deliver exceptional tensile strength and thread engagement. Featuring precision-cut internal metric threads and a protective black oxide finish, these standard hex nuts provide a secure, low-profile, and corrosion-resistant fastening solution when paired with high-tensile bolts.
Category: Hex Nut
Product description
Class 8 / Grade 8 High-Strength Black Oxide Hexagon Nut
- Property Class Marking: Stamped with clear performance marks (8 / S) on the bearing face, indicating compliance with high-tensile strength standards suitable for demanding load-bearing applications.
- Surface Coating: Treated with a high-grade black oxide / black phosphate coating that offers enhanced surface lubricity, reduced galling, and effective protection against atmospheric corrosion and oxidation.
- Standard Hexagon Geometry: Standardized 6-sided hex profile ensures universal compatibility with standard wrenches, sockets, and automated assembly equipment for efficient torque application.
- Precision Internal Threading: Cold-formed metric threads offer high pitch accuracy, smooth engagement, and maximum resistance against thread stripping under heavy clamping forces.
- High-Strength Material: Forged from premium carbon or alloy steel, heat-treated to withstand extreme tension, shear forces, and thermal stress.
- Wide Applications: Ideal for automotive chassis and engine mounts, structural steel framing, heavy machinery, agricultural equipment, and industrial pipe flanges.
