S-92949A765 5/8"-11 x 1 1/2" 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 durability in harsh environments.
• High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for reliable, heavy-duty applications.
• Precise, secure fastening thanks to Class 3A thread fit and UNC coarse threads, reducing the risk of cross-threading and assembly failures.
• Efficient installation and removal with a 3/8" hex drive and rounded button head, allowing for high torque application and a clean, low-profile finish.
• Full thread engagement across the 1-1/2" length, providing maximum grip and load distribution in thick materials or stacked components.
• Regulatory compliance assurance meeting ASME B18.3 standards, RoHS 3, and REACH, ensuring safety and environmental responsibility.
• Versatile coarse threading (5/8"-11 UNC) for quicker assembly and better performance in materials prone to galling or debris accumulation.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this 5/8"-11 UNC rounded head hex screw addresses common challenges like vibration loosening, corrosion-induced failure, and installation inefficiency. The 18-8 Stainless Steel material, combined with a passivated finish, provides exceptional resistance to rust and chemical exposure, making it ideal for outdoor machinery, marine equipment, and food processing applications. The coarse UNC thread and Class 3A fit ensure tight, reliable connections in soft metals or plastics, reducing the need for frequent maintenance. With a 3/8" hex drive and button head design, it offers easy access in confined spaces while maintaining a smooth surface to prevent snagging. These features collectively enhance assembly speed, equipment longevity, and operational safety in construction, automotive, and heavy machinery sectors.

Specification Summary & Compliance

This screw features a 5/8"-11 UNC coarse thread with Class 3A thread fit for high precision and strength. Dimensions include a 1" head diameter, 0.331" head height, and 1-1/2" length, fully threaded. It complies with ASME B18.3 specifications for dimensional consistency and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations.