S-92949A864 5/16"-24 x 3" ASME B18.3, ASTM F879 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ensuring long-term reliability in harsh environments.
• Exceptional strength and durability with 70,000 psi tensile strength and Rockwell B55 hardness, capable of withstanding heavy-duty industrial loads.
• Precise, secure fastening achieved through Class 3A thread fit and UNF fine threading, minimizing the risk of loosening under vibration.
• Easy installation and removal with a 3/16" hex drive, providing a firm grip and reducing tool slippage during assembly.
• Full compliance with industry standards including ASME B18.3, ensuring consistent quality and interchangeability in professional applications.
• Environmental and safety compliance with RoHS 3 and REACH regulations, making them suitable for use in regulated industries worldwide.
• Versatile fully threaded design allows for maximum adjustability and holding power across the entire 3" length.

Professional Applications & Engineering Value

Engineered for demanding environments, these 18-8 stainless steel rounded head screws provide a robust solution where corrosion resistance and mechanical strength are critical. The passivated finish enhances the natural corrosion-fighting properties of stainless steel, making these screws ideal for outdoor, marine, or chemical-exposed settings. With a Class 3A UNF fine thread, they deliver superior thread engagement and vibration resistance, crucial for machinery, automotive assemblies, and precision equipment. The hex drive and rounded button head design facilitate easy installation in confined spaces while maintaining a low profile. These features collectively address common industrial challenges such as fastener failure, corrosion-induced degradation, and assembly inefficiency, ensuring long-term operational integrity.

Specification Summary & Compliance

This screw adheres to precise dimensional standards with a Class 3A thread fit and UNF fine threading (5/16"-24), ensuring high accuracy and interchangeability. Manufacturing and material specifications strictly follow ASME B18.3 (referencing ASTM F879). The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming it is free from hazardous substances and safe for various industrial and consumer applications.