S-92245A572 1/4"-28 x 1 3/4" FF-S-85, MS35308-313 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, ideal for harsh industrial environments and outdoor applications.
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B74 hardness, ensuring reliable performance under high-stress conditions.
• Precise and secure fastening thanks to Class 2A thread fit and UNF fine threads, providing excellent vibration resistance and reduced loosening.
• Efficient installation and removal with an external hex drive and standard hex head design, compatible with common wrenches for quick assembly.
• Optimized thread engagement through partial threading, allowing for controlled clamping force and reduced risk of cross-threading.
• Full regulatory compliance meeting Fed. Spec. FF-S-85 (MS35308-313), RoHS 3, and REACH, ensuring safety and environmental standards are met.
• Versatile length and size at 1 3/4" with 1/4"-28 UNF thread, suitable for a wide range of machinery, equipment, and structural assemblies.

Professional Applications & Engineering Value

This 1/4"-28 UNF hex head screw delivers critical engineering value by addressing common industrial challenges such as corrosion, vibration, and mechanical stress. Crafted from passivated 18-8 stainless steel, it offers excellent resistance to rust and chemicals, making it ideal for applications in marine, chemical processing, and food equipment industries. The external hex drive and fine UNF threads ensure quick, secure installations with superior holding power, minimizing maintenance needs in dynamic environments. Its partially threaded design allows for precise tension control, preventing joint failure in assemblies requiring exact clamp load. Whether used in heavy machinery, automotive systems, or structural frameworks, this screw enhances durability and reliability, reducing downtime and lifecycle costs.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including Class 2A thread fit for consistent engagement and UNF fine threading (1/4"-28) for enhanced tensile strength. It conforms to Fed. Spec. FF-S-85 (MS35308-313) for quality assurance and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and safe for various industrial and commercial uses.