S-92949A595 5/16"-24 x 3/8" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments and extended service life.
• Exceptional thread engagement and reliability provided by the 5/16"-24 UNF fine thread with Class 3A fit, minimizing the risk of stripping and ensuring a secure, vibration-resistant connection.
• High-strength performance with a tensile strength of 70,000 psi and Rockwell B55 hardness, offering dependable load-bearing capacity for demanding applications.
• Efficient installation and removal facilitated by the hex drive style and 3/16" drive size, allowing for high torque application with standard tools.
• Streamlined, low-profile design of the rounded button head reduces snagging risks and provides a finished appearance in assembled products.
• Full threading for maximum grip across the entire 3/8" length, ensuring consistent clamping force and versatility in various material thicknesses.
• Guaranteed quality and safety through compliance with ASME B18.3, RoHS 3, and REACH, meeting stringent industrial and environmental standards.

Professional Applications & Engineering Value

This 18-8 stainless steel rounded head screw is engineered to address critical challenges in precision assembly and corrosive environments. The UNF fine threading (5/16"-24) and Class 3A thread fit provide superior vibration resistance and precise alignment, essential in machinery, automotive, and electronics where loosening under dynamic loads is a concern. The passivated finish enhances the innate corrosion resistance of stainless steel, making it suitable for outdoor, marine, or chemical-exposed applications without compromising integrity. Combined with a hex drive for secure torque transmission and a rounded button head for a flush finish, this fastener delivers reliable performance in tight spaces and high-stress industrial settings, reducing maintenance needs and downtime.

Specification Summary & Compliance

This screw features a 5/16"-24 UNF fine thread with Class 3A fit for high precision and strength, manufactured in accordance with ASME B18.3 specifications. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial use.