S-91771A255 10-24 x 2 1/4" 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
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B80 hardness for reliable load-bearing performance
• Precise thread engagement with Class 2A UNC coarse threads ensuring consistent fastening and vibration resistance
• Flush mounting capability with standard 82° countersink angle and flat head design for seamless surface integration
• Efficient installation with Phillips No. 2 drive providing secure tool engagement and reduced cam-out risk
• Full-length threading across the 2-1/4" length offers maximum grip range and adjustment flexibility
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 10-24 UNC flat head screws provide critical solutions where corrosion resistance and structural integrity are paramount. The passivated 18-8 stainless steel construction effectively combats chemical exposure and moisture, making them ideal for marine equipment, food processing machinery, and outdoor structural assemblies. The fully threaded design ensures maximum holding power across the entire fastener length, while the coarse UNC threading delivers superior performance in softer materials and high-vibration environments. With their standard 82° countersink angle, these screws create clean, flush installations in precision machinery and architectural metalwork, eliminating protrusions that could interfere with operational safety or aesthetic requirements.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit tolerance per UNC standards, ensuring consistent mating with corresponding nuts and threaded holes. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming restricted substance adherence for global industrial applications.