#4-40 Button Head Socket Cap Screws Alloy Steel with Thermal Black Oxide Coating – High-Strength Screws Our #4-40 Button Head Socket Cap Screws are made from high-strength alloy steel with a thermal black oxide coating. The black oxide finish enhances corrosion resistance and provides a sleek, professional appearance. The button head design offers a low-profile head and a larger bearing surface, making them ideal for demanding applications like automotive, industrial, and heavy-duty projects. The low-profile button head provides a smooth, rounded finish, while the Thermal Black Oxide coating adds a mild layer of corrosion resistance, making these screws perfect for indoor use and light outdoor applications. Key Features High Strength: Alloy steel construction provides exceptional tensile strength for demanding applications. Black Oxide Finish: Provides mild corrosion resistance for indoor and light outdoor use. Low-Profile Head: Button head design provides a smooth, finished appearance with a larger bearing surface. Easy Installation: 1/16" hex socket drive allows for secure tightening using hex keys or bits. High-Quality Assurance: Monster Bolts offers only the highest quality fasteners that meet or exceed industry standards. Specifications Diameter: #4 Thread Size: 40 TPI – Coarse (Standard) Thread Drive Type: 1/16" Hex Socket Head Type: Button Head Socket Cap Screw Material: Alloy Steel with Thermal Black Oxide Coating System of Measurement: Inch (Imperial / U.S.) Standards Met: ANSI/ASME B18.3, ASTM F835 Usage Information These high-strength button head socket cap screws are ideal for applications requiring a strong, reliable fastener with a low-profile head. The 1/16" hex socket drive allows for high torque installation, ensuring a secure fit. The #4-40 size is commonly used in machinery, equipment assembly, and automotive applications where strength and appearance are important. Ideal Applications Machinery and Equipment Assembly Automotive and Motorcycle Applications Robotics and Automation Equipment Metal and Plastic Fabrication Furniture and Cabinetry DIY Projects and Repairs Matching Products Nuts: Find matching #4-40 nuts here. Washers: Find matching washers here. Hex Keys: Find 1/16" hex keys and bits here. Order Yours Today Enhance your projects with our high-strength #4-40 Button Head Socket Cap Screws. Perfect for achieving a professional look and secure fastening in demanding applications. Order today and experience Monster Bolts’ fast shipping and superior customer service! ✔️ Trusted by professionals and hobbyists alike ✔️ High-strength alloy steel with thermal black oxide coating ✔️ Available in various lengths to suit your needs Need assistance? Contact our support team | Shipping and Return Policy
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