S-91773A079 2-56 x 3/8" ASME B18.6.3 Stainless Steel Round Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ideal for harsh environments
• Exceptional tensile strength of 100,000 psi ensures reliable, long-lasting fastening under high-stress conditions
• Precise Class 2A thread fit guarantees smooth installation and secure connections with standard UNC coarse threads
• Fully threaded design provides maximum grip and uniform load distribution along the entire 3/8" length
• Rockwell B100 hardness offers excellent durability and resistance to wear and deformation
• No. 1 Phillips drive enables quick, efficient installation with common tools, reducing assembly time
• Compliance with ASME B18.6.3, RoHS 3, and REACH ensures product reliability and environmental safety for global supply chains

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 2-56 UNC rounded head Phillips screws address critical challenges in machinery assembly, electronics, and precision equipment. The 18-8 stainless steel material, combined with a passivated finish, provides robust protection against corrosion, oxidation, and chemical exposure, extending service life in humid or corrosive settings. The coarse UNC thread and Class 2A fit facilitate rapid, vibration-resistant fastening, minimizing the risk of loosening in dynamic applications. With a fully threaded shank and rounded head profile, these screws ensure uniform clamping force and a flush finish, making them ideal for assemblies where space constraints and aesthetic integrity are paramount. Their high tensile strength and compliance with ASME B18.6.3 standards guarantee consistent performance in automotive, aerospace, and manufacturing sectors.

Specification Summary & Compliance

This screw features a 2-56 UNC coarse thread with Class 2A tolerance for precise fit and easy assembly. It is manufactured in accordance with ASME B18.6.3 specifications, ensuring dimensional accuracy and mechanical reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for hazardous substance restrictions.