[Hex Socket Head Cap Screw]: The package comes with 10pcs of black hex socket cap screws bolts in 3/8-16×3″(D*H) thread size, 0.56 inch Head Diameter, 0.38 inch Head Height, 0.31 Hex Drive Size Diameter
[Sturdy & Durable]: The hex socket cap screws bolts are made of 12.9 carbon steel, which is corrosion-resistant and rust-resistant, not easy to break, can maintain high strength and excellent performance in harsh environments, and is durable for long-time use.
[Features]: These hex socket head machine screws are UNC threads, and very smooth, sharp, and accurate. Uniform force, located in the center of the head with no offset, not easy to slip.
[Good Choice]: Suitable for indoor and outdoor, such as machinery electronics, instruments and instrument industries, furniture, office equipment, construction, cars, bicycles, 3D printing projects, communication equipment, and ship assembly
[Notice]: This socket head cap screws bolts are packed in a box. They are suitable for use at home, in the office, or at work.