S-90585A252 10-24 x 1 1/4" ASME B18.3, ASTM F879 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and passivated finish, ideal for harsh chemical and marine environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under heavy loads
• Precision thread engagement with Class 3A fit and UNC coarse spacing ensuring vibration-resistant, secure fastening
• Efficient installation with hex drive design providing positive torque transmission and reduced cam-out risk
• Flush mounting capability with standard 82° countersink angle for smooth surface finishes in industrial applications
• Full threading coverage along the 1-1/4" length maximizes grip strength and load distribution
• Regulatory compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards for global industrial acceptance

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 316 stainless steel flat head screws deliver exceptional performance where corrosion resistance and structural integrity are critical. The combination of 70,000 psi tensile strength and Rockwell B55 hardness ensures reliable fastening in heavy machinery, marine equipment, and chemical processing applications. The passivated finish enhances the natural corrosion resistance of 316 stainless steel, providing extended service life in aggressive environments. With UNC coarse threads and Class 3A fit, these hex drive screws offer superior vibration resistance and installation efficiency, while the 82° countersink angle enables flush mounting for streamlined surfaces in precision assemblies.

Specification Summary & Compliance

This 10-24 x 1-1/4" flat head screw features precision UNC coarse thread spacing with Class 3A fit tolerance for optimal thread engagement. Manufacturing complies with ASME B18.3 specifications (ASTM F879) ensuring dimensional accuracy and performance reliability. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, confirming environmental safety and regulatory acceptance for industrial applications worldwide.