S-91255A062 3/4"-10 x 3" 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 thread engagement with Class 3A fit ensures precise, vibration-resistant connections in critical applications
• High-torque installation capability through 7/16" hex drive design for secure fastening without stripping
• Maximum load distribution from rounded button head profile that minimizes surface damage while providing flush mounting
• Reliable performance under stress with 120,000 psi tensile strength and Rockwell C37 hardness for heavy-duty applications
• Quick installation efficiency with coarse UNC threading that reduces assembly time while maintaining structural integrity
• Broad compatibility with standard 3/4"-10 UNC components and industrial equipment across multiple sectors

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these black-oxide alloy steel rounded head screws provide critical solutions for vibration-prone applications where fastener integrity is paramount. The Class 3A thread fit ensures precise tolerance control, eliminating play in machinery assemblies while the coarse UNC threading enables rapid installation in production settings. The fully threaded design offers consistent engagement along the entire 3" length, distributing shear forces evenly across connected components. Particularly valuable in heavy equipment manufacturing and structural frameworks, these fasteners combine the corrosion protection of black-oxide treatment with the mechanical strength needed for long-term reliability in challenging operating conditions.

Specification Summary & Compliance

Manufactured to exacting Class 3A thread fit standards with 3/4"-10 UNC coarse threading and right-hand thread direction. Complies with ASME B18.3 and ASTM F835 specifications for dimensional accuracy and mechanical properties. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) requirements, ensuring suitability for global industrial applications while maintaining 120,000 psi tensile strength and Rockwell C37 hardness throughout the fastener's service life.