S-91773A085 2-56 x 7/8" ASME B18.6.3 Stainless Steel Round Head Phillips Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
• Superior tensile strength of 100,000 psi ensures reliable, long-lasting fastening under high-stress conditions.
• Fully threaded design provides maximum thread engagement and enhanced holding power across the entire length.
• Coarse UNC thread with Class 2A fit allows for quick assembly and reduces cross-threading risks.
• Convenient Phillips drive (No. 1) offers efficient installation with standard tools, minimizing slippage.
• Rounded head profile delivers a smooth, finished appearance and reduces surface snagging.
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees consistent quality and environmental safety.

Professional Applications & Engineering Value

This 2-56 UNC fully threaded rounded head screw is engineered to address critical fastening challenges in demanding settings. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to oxidation and chemical exposure, making it suitable for industrial applications like machinery assembly, electronic enclosures, and outdoor equipment. The coarse thread and Class 2A thread fit ensure easy alignment and secure fastening, reducing installation time and preventing thread damage. With a Rockwell B100 hardness and high tensile strength, it maintains integrity under vibration and load, offering reliable performance in machine screws and other precision assemblies.

Specification Summary & Compliance

This screw features a 2-56 UNC coarse thread with Class 2A thread fit for standard dimensional accuracy, a length of 7/8 inch, and a rounded head with Phillips drive. It is manufactured in compliance with ASME B18.6.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental and safety standards.