#4-40 x 3" Socket Head Cap Screw, Coarse, Full Thread, Alloy Steel, Black Oxide Finish

# Fasteners - Socket Cap Screws The #4-40 x 3" Socket Head Cap Screw from MROSupply Fasteners is engineered for high-performance fastening applications in various industrial settings. Constructed from durable alloy steel and featuring a black oxide finish, this socket cap screw combines strength with corrosion resistance, making it ideal for demanding environments. ## Key Features • **Size & Thread**: Measures #4-40 with a length of 3 inches, designed for coarse threading to provide a secure grip. • **Material**: Made from high-quality alloy steel, ensuring superior tensile strength and durability. • **Finish**: Black oxide finish enhances corrosion resistance and provides a sleek appearance. • **Design**: Full thread design for maximum engagement, ensuring reliable fastening under heavy loads. • **Compatibility**: Suitable for use with a variety of tools, including hex keys and socket wrenches, facilitating ease of installation. ## Applications • **Industrial Machinery**: Ideal for securing components in machinery, equipment, and assembly applications across various industries. • **Automotive**: Perfect for automotive repair and assembly, ensuring robust fastening in engine compartments and chassis. • **General Maintenance**: Widely used in maintenance, repair, and operations (MRO) tasks, providing reliable fastening solutions. ## Benefits • **Exceptional Strength**: Alloy steel construction provides high tensile strength, ensuring long-term performance and reducing the risk of failure. • **Corrosion Resistance**: The black oxide finish protects against rust and wear, extending the lifespan of the screw in harsh environments. • **Versatile Use**: The #4-40 size and full thread design make it suitable for a wide range of applications, enhancing its utility in different settings. --- *Product information compiled with AI assistance for reference purposes.*