S-92245A542 1/4"-20 x 1" FF-S-85, MS35307-308 Mil. Spec. 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments.
• High tensile strength of 70,000 psi provides exceptional load-bearing capacity for heavy-duty applications, reducing failure risks.
• Precise Class 2A thread fit guarantees smooth assembly and secure fastening, minimizing cross-threading and rework.
• UNC coarse threading enables quick installation and high resistance to vibration loosening in dynamic settings.
• External hex drive design allows for easy torque application with standard tools, speeding up maintenance and assembly processes.
• Partial threading offers optimal grip and clamping force control, ideal for materials requiring specific unthreaded shank sections.
• Compliance with Fed. Spec. FF-S-85, RoHS 3, and REACH ensures adherence to strict industry and environmental standards, supporting sustainable and safe operations.

Professional Applications & Engineering Value

This 1/4"-20 x 1" hex head screw is engineered to address common industrial challenges such as corrosion-induced failures and assembly inefficiencies. Crafted from passivated 18-8 stainless steel, it resists oxidation and chemical exposure, making it ideal for outdoor machinery, marine equipment, and chemical processing plants. The UNC coarse thread and external hex drive facilitate rapid installation in high-vibration environments, reducing downtime. With a Rockwell B74 hardness and 70,000 psi tensile strength, it ensures durable connections in structural frameworks, automotive assemblies, and heavy machinery, where reliability under stress is critical. Its partially threaded design allows precise clamping in layered materials, enhancing joint integrity without compromising speed.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy, ensuring consistent performance. It meets Fed. Spec. FF-S-85 (MS35307-308) for manufacturing standards, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for various industrial applications.