S-92245A538 1/4"-20 x 9/16" FF-S-85, MS35307-304 Mil. Spec. 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with passivated 18-8 stainless steel construction for long service life in harsh environments
• Superior load-bearing capability with 70,000 psi tensile strength and Rockwell B74 hardness for demanding applications
• Reliable fastening performance through UNC coarse threading and Class 2A fit ensuring secure connections
• Full-length threading provides maximum grip and holding power across the entire fastener length
• Easy installation and removal with standard external hex drive and 7/16" head width for common tool compatibility
• Right-hand thread design offers familiar installation for standard industrial applications
• Regulatory compliance assurance meeting Fed. Spec. FF-S-85, RoHS 3, and REACH standards

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these 1/4"-20 hex head screws deliver exceptional performance where reliability matters most. The passivated 18-8 stainless steel construction provides superior corrosion resistance, making them ideal for manufacturing equipment, machinery assembly, and outdoor installations exposed to moisture and chemicals. The UNC coarse threading with Class 2A fit ensures rapid installation and vibration resistance, while the fully threaded design maximizes clamping force distribution. With 70,000 psi tensile strength and Rockwell B74 hardness, these fasteners maintain structural integrity under significant mechanical stress, preventing joint failure in critical assemblies. The external hex drive allows for high-torque application using standard tools, streamlining maintenance and repair operations across various industrial sectors.

Specification Summary & Compliance

This 1/4"-20 hex head screw features precision UNC coarse threading with Class 2A thread fit tolerance for consistent engagement. Manufacturing complies with Fed. Spec. FF-S-85 (MS35307-304) for quality assurance. The fastener is fully compliant with RoHS 3 (2015/863/EU) environmental directives and REACH (EC 1907/2006) regulations, ensuring safe use in industrial applications worldwide. Dimensions include 9/16" length, 7/16" head width, and 5/32" head height for standardized installation requirements.