S-92949A763 5/8"-11 x 1" 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, ensuring long-term reliability in harsh environments.
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for demanding industrial applications.
• Precise Class 3A thread fit with UNC coarse threading, providing secure, vibration-resistant connections and easier assembly.
• Optimized installation efficiency through a 3/8" hex drive and fully threaded design, enabling quick, high-torque fastening.
• Enhanced durability and compliance by meeting ASME B18.3 standards and being RoHS 3 and REACH compliant for global use.
• Versatile rounded button head profile that reduces surface marring and offers a low-profile, aesthetically clean finish.

Professional Applications & Engineering Value

This 5/8"-11 UNC Rounded Head Hex Screw is engineered to address critical challenges in heavy machinery, structural assemblies, and corrosive environments. The 18-8 Stainless Steel material, combined with a passivated finish, provides excellent resistance to rust and chemical exposure, prolonging service life in outdoor or humid settings. Its coarse UNC threads and Class 3A fit ensure tight, reliable fastening that withstands vibrations and dynamic loads, reducing maintenance needs. The 3/8" hex drive allows for secure tool engagement, minimizing slippage during high-torque installation. Ideal for construction, marine, and industrial equipment, this fully threaded screw delivers consistent performance where strength, corrosion resistance, and compliance with ASME B18.3 are paramount.

Specification Summary & Compliance

This fastener adheres to precise dimensional and performance criteria, including a Class 3A thread fit for tight tolerances and UNC coarse threading (5/8"-11) per inch system standards. It is manufactured in compliance with ASME B18.3 specifications and meets regulatory requirements such as RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring environmental safety and global acceptability. The screw features a fully threaded design with a length of 1", head diameter of 1", and drive size of 3/8", supporting reliable integration into various assemblies.