Hex Head Cap Screw – Grade 2 for Light-Duty Applications
Grade 2 hex head cap screws are widely used for general-purpose fastening where moderate strength, reliability, and affordability are required. Manufactured from low-carbon steel, these fasteners are designed for light-duty applications across manufacturing, maintenance, construction, and repair environments. The six-sided hex head allows for easy wrenching, consistent torque control, and secure installation in a wide range of assemblies.
Mechanical Properties and Size Ranges
Grade 2 hex head cap screws are available in fractional sizes and offer different mechanical properties based on diameter and length. For diameters from 1/4" to 3/4" and lengths of 6" and shorter, these fasteners feature a Rockwell hardness of B80 to B100, a proof load strength of 55,000 psi, and a minimum tensile strength of 74,000 psi.
For diameters from 1/4" to 3/4" longer than 6", or sizes over 3/4" up to 1-1/2", Grade 2 cap screws provide a Rockwell hardness of B70 to B100, a proof load strength of 33,000 psi, and a minimum tensile strength of 60,000 psi. This range of properties ensures dependable performance in non-critical bolting applications.
Benefits of Plain Finish Grade 2 Fasteners
Plain finish Grade 2 hex head cap screws have minimal or no protective coating, leaving the steel surface unplated. This offers several advantages in specific applications. Without additional plating, the fastener maintains its original thread dimensions and mechanical characteristics, supporting accurate torque application and precise fit. Plain finish fasteners are also highly cost-effective, making them ideal for indoor, dry, or controlled environments where corrosion resistance is not a primary concern.
Ideal Applications and Use Cases
Grade 2 plain hex head cap screws are commonly used in furniture assembly, light equipment mounting, general fabrication, and non-critical automotive or agricultural repairs. They are also well suited for welding or heat-affected applications, as there is no coating to burn off or interfere with the process.
For dependable, economical fastening in light-duty conditions, Grade 2 hex head cap screws deliver consistent performance and practical value.
