S-92245A809 5/8"-11 x 2" FF-S-85, MS35307-464 Mil. Spec. 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B74 hardness for heavy-duty load-bearing applications
• Optimized installation efficiency through coarse UNC threading and external hex drive design for faster assembly and disassembly
• Precise thread engagement control with Class 2A thread fit and partial threading for accurate clamping force distribution
• Regulatory compliance assurance meeting Fed. Spec. FF-S-85 (MS35307-464), RoHS 3, and REACH standards for global industrial use
• Enhanced durability with 2" length and 1½" minimum thread length providing secure fastening in thick materials
• Reduced maintenance requirements due to stainless steel's inherent resistance to rust and chemical degradation

Professional Applications & Engineering Value

This 5/8"-11 UNC hex head screw delivers critical engineering solutions where corrosion resistance and structural integrity are paramount. The passivated 18-8 stainless steel construction effectively combats oxidation in marine, chemical processing, and outdoor applications, while the coarse thread spacing ensures rapid installation in production environments. The external hex drive provides superior torque transmission for high-tension assemblies, and the partial threading design prevents thread damage during repeated disassembly. Ideal for structural frameworks, heavy machinery, and industrial equipment requiring Fed. Spec. FF-S-85 compliance, this fastener maintains performance under sustained mechanical stress while meeting stringent environmental regulations.

Specification Summary & Compliance

Manufactured to exacting standards with Class 2A thread fit tolerance and UNC coarse thread specifications. Complies with Fed. Spec. FF-S-85 (MS35307-464) for dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. Features 5/8"-11 thread size with 0.625" diameter and 1½" minimum thread length on a 2" overall length configuration.