S-91253A199 8-32 x 1" ASTM F835 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating that protects against rust in demanding industrial environments
• Superior thread engagement with Class 3A fit ensuring precise, vibration-resistant fastening in critical applications
• Maximum drive torque capability through hex drive design that prevents stripping during high-tension installations
• Optimized flush mounting with 82° countersink angle for seamless surface integration and reduced protrusion risks
• Reliable performance under extreme loads thanks to 130,000 PSI tensile strength and Rockwell C39 hardness rating
• Full-thread engagement flexibility allowing installation at any point along the screw's 1-inch length
• Environmental compliance assurance meeting RoHS 3 and REACH standards for sustainable manufacturing practices

Professional Applications & Engineering Value

These 8-32 UNC flat head screws deliver critical performance advantages in industrial settings where vibration resistance and material integrity are paramount. The black-oxide alloy steel construction provides superior protection against corrosion while maintaining the 130,000 PSI tensile strength required for high-stress applications. The coarse thread spacing and Class 3A thread fit ensure rapid installation with minimal cross-threading risk, significantly reducing assembly time in production environments. The 82° countersink angle creates flush surface mounting ideal for machinery, automotive components, and electrical enclosures where protruding fasteners could interfere with operation. These fully threaded screws with hex drive configuration are engineered to withstand extreme mechanical stresses while maintaining their structural integrity through repeated thermal cycles and dynamic loading conditions.

Specification Summary & Compliance

Manufactured to exacting ASTM F835 specifications with Class 3A thread fit precision and UNC coarse thread profile. The black-oxide alloy steel construction delivers consistent performance across the 1-inch length with fully threaded design. Compliant with RoHS 3 (2015/863/EU) environmental directives and REACH (EC 1907/2006) standards, ensuring responsible manufacturing practices. The 3/32" hex drive provides secure tool engagement while the standard flat head profile with 82° countersink angle meets industry-standard mounting requirements.