S-91771A075 2-56 x 5/32" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments.
• High tensile strength of 80,000 psi ensures reliable fastening under demanding mechanical loads.
• Rockwell B80 hardness provides excellent durability and resistance to wear over time.
• Standard 82° countersink angle allows for a flush, professional finish in countersunk applications.
• Class 2A thread fit with UNC coarse threading enables quick, easy installation and secure holding power.
• Fully threaded design maximizes grip and load distribution along the entire screw length.
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees quality, safety, and environmental standards for global use.

Professional Applications & Engineering Value

These 2-56 UNC flat head Phillips screws are engineered to address common industrial challenges, such as corrosion and mechanical failure. The passivated 18-8 stainless steel material offers exceptional resistance to rust and chemicals, making them ideal for applications in electronics, machinery, and outdoor equipment where exposure to moisture is a concern. The fully threaded design and coarse thread spacing ensure rapid assembly and strong retention in materials like metal and plastic, reducing installation time and minimizing the risk of loosening under vibration. With a standard 82° countersink angle, these screws sit flush for smooth surfaces, enhancing both safety and aesthetics in precision assemblies. This combination of high tensile strength and corrosion-resistant properties delivers long-term reliability, reducing maintenance costs and downtime in demanding industrial settings.

Specification Summary & Compliance

This product adheres to precise dimensional standards, including Class 2A thread fit and UNC coarse thread specifications, ensuring consistent performance and interchangeability. It meets ASME B18.6.3 for mechanical and dimensional requirements, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for environmentally conscious industrial applications.