S-91249A052 2-56 x 5/16" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide coated 18-8 Stainless Steel, ideal for harsh industrial environments
• High tensile strength of 70,000 psi ensures reliable load-bearing capacity and reduces failure risks
• Rockwell B70 hardness provides excellent durability and wear resistance for long-term use
• Class 2A thread fit with UNC coarse threading allows for easy assembly and secure fastening
• Fully threaded design offers consistent grip along the entire length, enhancing connection stability
• Phillips No. 1 drive enables efficient installation with standard tools, reducing assembly time
• Compliance with ASME B18.6.3, RoHS 3, and REACH ensures quality, safety, and environmental standards are met

Professional Applications & Engineering Value

This 2-56 UNC screw with a rounded pan head and Black-Oxide 18-8 Stainless Steel construction is engineered to address common industrial challenges, such as corrosion in humid or chemical-exposed settings. The coarse thread and Class 2A fit facilitate quick, secure installations in materials like metal or plastic, minimizing cross-threading risks. With a fully threaded right-hand design and Phillips drive, it streamlines assembly in machinery, electronics, and automotive components, offering consistent performance under stress. Ideal for applications requiring high-strength fasteners, it combines durability with regulatory compliance to support efficient, reliable operations in demanding environments.

Specification Summary & Compliance

This screw features precise Class 2A thread fit per UNC standards, ensuring dimensional accuracy for reliable fastening. It adheres to ASME B18.6.3 manufacturing specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for global industrial use.