S-98164A648 8-32 x 1 3/4" ASME B18.3, ASTM F879 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction and passivated finish
• High-strength performance with a tensile strength of 70,000 psi for reliable, durable fastening in demanding applications
• Precise, secure threading with Class 3A fit and UNC coarse thread for excellent grip and vibration resistance
• Easy installation and removal with a 3/32" hex drive that provides a positive grip and reduces tool slippage
• Full-length threading ensures consistent engagement and maximum holding power along the entire 1 3/4" length
• Compliant with major industry standards including ASME B18.3, RoHS 3, and REACH for guaranteed quality and safety
• Low-profile, rounded button head design offers a finished appearance and reduces the risk of snagging

Professional Applications & Engineering Value

This 316 stainless steel rounded head screw is engineered to solve critical challenges in corrosive and high-stress environments. Its passivated finish enhances the natural corrosion resistance of the 316 stainless steel, making it ideal for marine, chemical processing, and food industry applications where moisture and chemicals are prevalent. The 8-32 UNC coarse thread and Class 3A thread fit provide superior holding power and resistance to loosening under vibration, a common issue in machinery and equipment assembly. The combination of a hex drive and fully threaded design ensures quick, secure installation and consistent performance, reducing assembly time and maintenance needs in industrial screw applications.

Specification Summary & Compliance

This screw adheres to Class 3A thread tolerances for precision fit and is manufactured to meet ASME B18.3 specifications. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for various industrial uses.