S-98164A663 10-32 x 3" ASME B18.3, ASTM F879 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction and passivated surface treatment
• Exceptional thread engagement and vibration resistance achieved through Class 3A UNF fine threads with right-hand orientation
• High-torque installation capability enabled by 1/8" hex drive design for secure fastening in demanding applications
• Reliable 70,000 psi tensile strength ensures structural integrity under significant mechanical loads
• Full threading along the 3" length provides maximum adjustability and holding power
• Low-profile rounded button head offers a finished appearance while minimizing protrusion risks
• Comprehensive regulatory compliance including ASME B18.3, RoHS 3, and REACH for global industrial acceptance

Professional Applications & Engineering Value

These 316 stainless steel rounded head screws deliver critical performance advantages in corrosive and high-stress environments. The combination of UNF Class 3A fine threads and fully threaded design ensures superior vibration resistance and load distribution, making them ideal for precision equipment, marine hardware, and chemical processing applications. The passivated finish enhances the natural corrosion resistance of 316 stainless steel, while the hex drive configuration allows for high-torque installation without stripping. With their 70,000 psi tensile strength and compliant design, these screws provide engineering reliability where failure is not an option.

Specification Summary & Compliance

Manufactured to precise Class 3A thread fit tolerances per UNF specifications with 10-32 fine thread spacing. Complies with ASME B18.3 dimensional standards and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features include right-hand thread direction, 0.361" head diameter, and fully threaded 3" length construction.