S-97763A333 8-32 x 5/8" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide coated 18-8 Stainless Steel, ideal for harsh industrial environments.
• Exceptional tensile strength of 70,000 psi ensures reliable, long-lasting fastening under high-stress conditions.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies.
• Easy installation and removal with a 3/32" hex drive and rounded button head design.
• Wide compatibility thanks to UNC coarse threading, suitable for various materials and applications.
• Full compliance with ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory adherence.
• Consistent performance with Rockwell B55 hardness and fully threaded shank for uniform load distribution.

Professional Applications & Engineering Value

This 8-32 x 5/8" Black-Oxide 18-8 Stainless Steel Rounded Head Screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and assembly efficiency. The Black-Oxide coating on 18-8 Stainless Steel enhances durability in moist or chemically aggressive settings, while the UNC coarse thread and Class 3A fit minimize cross-threading and provide a secure hold in metals, plastics, and composites. Its rounded button head and hex drive allow for quick, tool-accessible fastening in confined spaces, making it ideal for machinery, electronics, and automotive components where reliability and compliance with ASME B18.3 standards are critical.

Specification Summary & Compliance

This screw features precise UNC coarse threading with a Class 3A fit for high accuracy and minimal play. Dimensions include a 5/8" length, 8-32 thread size, and 0.312" head diameter. It is manufactured to meet ASME B18.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industry-standard performance.