S-97763A177 8-32 x 3/8" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from Black-Oxide 18-8 Stainless Steel, ideal for harsh environments and reducing maintenance costs.
• High tensile strength (70,000 psi) and Rockwell B55 hardness ensure reliable performance under heavy loads and vibration.
• Precise Class 3A thread fit guarantees secure, tight connections, minimizing the risk of loosening in critical assemblies.
• Fully threaded UNC coarse design provides faster installation and superior holding power in a wide range of materials.
• Rounded button head with hex drive (3/32") offers a low-profile, finished appearance and secure tool engagement without stripping.
• Compliance with ASME B18.3, RoHS 3, and REACH ensures product consistency, safety, and environmental responsibility for global projects.
• Right-hand coarse threading simplifies and speeds up assembly processes, improving overall workflow efficiency.

Professional Applications & Engineering Value

This 8-32 UNC Rounded Head Screw is engineered to address common industrial challenges such as corrosion-induced failure and assembly inefficiency. The Black-Oxide coating on 18-8 Stainless Steel significantly enhances corrosion resistance, making it suitable for outdoor equipment, marine applications, and chemical processing plants where moisture and corrosive agents are prevalent. The Class 3A thread fit and coarse UNC threading ensure quick, reliable fastening in metals and plastics, reducing installation time while maintaining joint integrity under stress. Its fully threaded design and 70,000 psi tensile strength provide consistent clamping force, preventing loosening in vibrating machinery and high-load assemblies. These features make it an ideal industrial-grade fastener for OEM manufacturing, automotive systems, and electronic enclosures requiring durability and compliance.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including a Class 3A thread fit for tight tolerances and UNC coarse threading (8-32 size) per industry norms. It is manufactured in compliance with ASME B18.3 specifications, ensuring consistent quality and performance. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for hazardous substances. With a length of 3/8" and a fully threaded design, it supports reliable fastening across various applications.