S-92949A611 5/16"-18 x 2 1/4" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and passivated finish, ideal for harsh industrial environments.
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and stress.
• Precise Class 3A thread fit provides secure fastening with minimal risk of loosening or cross-threading.
• Easy installation and removal with a 3/16" hex drive, reducing assembly time and tool wear.
• Coarse UNC threading offers quick engagement and strong holding power in various materials.
• Durable Rockwell B55 hardness maintains thread integrity and resists deformation during repeated use.
• Full threading along the 2 1/4" length allows for adjustable grip and consistent clamping force.

Professional Applications & Engineering Value

This 18-8 stainless steel rounded head screw is engineered to address common industrial challenges, such as vibration-induced loosening and corrosion in demanding settings. The Class 3A thread fit and coarse UNC threading ensure rapid, secure fastening in machinery, automotive assemblies, and structural frameworks, reducing downtime. The passivated finish enhances corrosion resistance, making it suitable for outdoor or humid environments. With a hex drive for easy torque application, it streamlines maintenance in industrial applications, while the high tensile strength supports heavy-duty use without failure.

Specification Summary & Compliance

This screw features a 5/16"-18 UNC coarse thread with Class 3A precision fit for tight tolerances, manufactured in accordance with ASME B18.3 standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity.