S-91735A025 2-56 x 5/8" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Exceptional mechanical strength delivering 80,000 psi tensile strength and Rockwell B85 hardness for reliable load-bearing performance
• Precision thread engagement with Class 2A fit and UNC coarse threads ensuring secure fastening and vibration resistance
• Optimized drive efficiency through Phillips No. 1 drive design providing consistent torque transfer and reduced cam-out risk
• Full-threaded design maximizing grip length and distribution for enhanced joint integrity across the 5/8" length
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH
• Versatile pan head profile with standard rounded design offering clean aesthetics and adequate bearing surface

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 316 stainless steel rounded head screws combine material excellence with precision manufacturing to address critical fastening challenges. The passivated finish significantly enhances corrosion resistance in chemical processing, marine, and food equipment environments where moisture and aggressive media are prevalent. With fully threaded UNC coarse spacing and Class 2A thread fit, these screws provide superior engagement in both metallic and non-metallic materials, reducing installation time while maintaining consistent clamping force. The Phillips drive system ensures efficient assembly in high-volume production settings, while the pan head design offers optimal clearance and professional appearance for finished products requiring both structural integrity and aesthetic considerations.

Specification Summary & Compliance

This 2-56 UNC screw maintains dimensional accuracy per Class 2A thread fit standards with coarse thread spacing. Manufacturing conforms to ASME B18.6.3 specifications for mechanical properties and dimensional requirements. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring restricted substance adherence. The 5/8" length and fully threaded configuration provide consistent performance across applications requiring standardized fastening solutions.