S-91255A061 3/4"-10 x 2" ASTM F835 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating, extending service life in harsh industrial environments
• Superior load-bearing capacity from 120,000 psi tensile strength, preventing fastener failure under extreme stress
• Precision Class 3A thread fit ensures secure mating with components, minimizing vibration-induced loosening
• Optimized torque transmission through 7/16" hex drive design, reducing tool slippage during installation
• Enhanced material durability with Rockwell C37 hardness, maintaining structural integrity through repeated use
• Rapid installation capability with UNC coarse threading, reducing assembly time in production environments
• Full regulatory compliance meeting ASME B18.3 and ASTM F835 specifications for guaranteed performance standards

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these black-oxide alloy steel rounded head screws deliver exceptional performance in demanding environments. The fully threaded UNC coarse spacing provides maximum engagement in soft materials and accelerated assembly processes, while the Class 3A thread fit ensures precise tolerance control for critical connections. The rounded head profile with hex drive offers superior flush mounting capabilities combined with high-torque installation efficiency. Ideal for machinery assembly, structural frameworks, and equipment manufacturing where vibration resistance and long-term reliability are paramount. The combination of high tensile strength and corrosion-resistant coating makes these screws particularly valuable in manufacturing, construction, and heavy equipment sectors where fastener failure is not an option.

Specification Summary & Compliance

Manufactured to exacting Class 3A thread tolerances with UNC coarse thread spacing (3/4"-10), these screws meet ASME B18.3 and ASTM F835 specifications for dimensional accuracy and performance. The black-oxide alloy steel construction provides consistent mechanical properties with Rockwell C37 hardness and 120,000 psi tensile strength. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. The 2" length with fully threaded design and 7/16" hex drive provides standardized installation across industrial applications.