Hex Head Cap Screw - Grade 2
1/4" to 3/4", 6" and shorter
Rockwell Hardness - B80 to B100
Proof Load Strength - 55,000 psi
Minimum Tensile Strength - 74,000 psi
1/4" to 3/4", longer than 6"
or Over 3/4" to 1-1/2"
Rockwell Hardness - B70 to B100
Proof Load Strength - 33,000 psi
Minimum Tensile Strength - 60,000 psi
Grade 2 fasteners are made from low-carbon steel, providing moderate tensile strength of 74,000 psi, making them suitable for light-duty applications. These fasteners come in a variety of forms, including bolts, nuts, washers, and screws, and are commonly available in inch sizes. When Grade 2 fasteners are finished with plain plating, they typically have minimal or no additional coating, exposing the steel to the elements without the protective layers found in other plated fasteners.
The lack of plating offers several advantages in specific applications. Firstly, plain plating ensures that the fastener maintains its original mechanical properties, as there’s no additional layer—such as zinc or other coatings—that could interfere with torque application, thread integrity, or the overall performance of the fastener. This makes plain-plated Grade 2 fasteners ideal for applications requiring precise fitting, such as in assembly or repair work where exact torque control is needed.
One of the key benefits of having no plating is cost-effectiveness. Plain-plated fasteners are generally less expensive than their plated counterparts, making them an economical choice for projects where corrosion resistance is not a primary concern. The lack of plating also means these fasteners are more readily available for use in applications that do not involve exposure to harsh weather conditions, such as indoor projects, furniture assembly, or non-critical automotive repairs.
Additionally, the absence of a coating makes plain-plated Grade 2 fasteners more suitable for environments where welding or heat treatment is required. The lack of plating means there’s no risk of damaging a coating during the welding process, preserving the fastener’s strength and functionality.
Overall, plain-plated Grade 2 fasteners provide a reliable, cost-effective solution for light-duty applications where corrosion resistance and coatings are not a priority.
