S-92245A857 3/4"-10 x 3" FF-S-85, MS35307-491 Mil. Spec. 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance thanks to passivated 18-8 stainless steel, ensuring long-term reliability in harsh environments.
• Superior tensile strength rated at 70,000 psi, providing reliable performance under high-stress industrial applications.
• Optimized thread engagement with a minimum thread length of 1 3/4" and Class 2A fit for secure, vibration-resistant connections.
• Easy installation and removal with an external hex drive and 1 1/8" head width, allowing for high-torque application with standard tools.
• Enhanced durability from Rockwell B74 hardness, resisting wear and deformation in demanding mechanical settings.
• Coarse UNC threading enables quick assembly and reduced cross-threading risks, ideal for rapid industrial operations.
• Compliance with strict regulations including RoHS 3 and REACH, ensuring safe and environmentally responsible usage.

Professional Applications & Engineering Value

This 3/4"-10 UNC hex head screw is engineered to address critical challenges in heavy machinery, structural assemblies, and outdoor equipment where corrosion resistance and high tensile strength are paramount. The passivated 18-8 stainless steel construction prevents rust and chemical degradation, extending service life in humid or corrosive conditions. Its partially threaded design and coarse thread spacing provide optimal clamping force and reduce the risk of loosening under dynamic loads. With an external hex drive and robust head dimensions, it supports efficient installation in confined spaces, making it a reliable choice for industrial fastening applications requiring consistent performance and compliance with federal and environmental standards.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including Class 2A thread fit for consistent assembly and UNC coarse threading with a 3/4"-10 size. It meets Fed. Spec. FF-S-85 (MS35307-491) for quality assurance and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.