S-92949A198 8-32 x 7/8" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel and passivated finish, ideal for harsh environments and extended service life.
• High-strength performance offering 70,000 psi tensile strength and Rockwell B55 hardness for demanding, heavy-duty applications.
• Precise, reliable fastening ensured by Class 3A thread fit and UNC coarse thread, minimizing the risk of cross-threading and loosening.
• Efficient installation and removal with a 3/32" hex drive and rounded button head, providing a secure grip and flush finish.
• Full thread engagement along the 7/8" length for maximum holding power and uniform stress distribution.
• Compliance with industry standards including ASME B18.3, ensuring dimensional accuracy and interchangeability.
• Environmental and safety adherence with RoHS 3 and REACH compliance, supporting sustainable and safe manufacturing practices.

Professional Applications & Engineering Value

This 8-32 UNC screw is engineered to address critical challenges in industrial assembly, where corrosion resistance and high tensile strength are paramount. The 18-8 Stainless Steel material, enhanced by a passivated finish, effectively combats rust and chemical degradation in demanding environments like marine, food processing, and outdoor equipment. Its rounded button head and hex drive design allow for low-profile, tool-accessible fastening in confined spaces, reducing installation time and improving aesthetics. With a Class 3A thread fit and coarse thread, it ensures quick assembly and reliable performance in high-vibration applications, preventing joint failure and maintenance downtime. Ideal for machinery, electronics, and structural frameworks, this screw delivers consistent engineering value by enhancing durability, ease of use, and compliance with rigorous standards.

Specification Summary & Compliance

This product features precise dimensions including a 7/8" length, 0.312" head diameter, and 3/32" hex drive, with threading conforming to UNC coarse thread standards and Class 3A thread fit for high precision. It meets ASME B18.3 specifications for dimensional accuracy and performance. Additionally, it is 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 applications.