S-90909A511 6-32 x 1/4" Stainless Steel Flanged Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and passivated finish, ideal for harsh chemical and marine environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable performance under high stress
• Precision thread engagement through Class 3A fit and 6-32 UNC coarse threading, ensuring secure fastening and vibration resistance
• Enhanced installation efficiency with 5/64" hex drive and fully threaded design for quick assembly and consistent torque application
• Integrated flange design provides wider bearing surface, eliminating the need for separate washers and distributing load effectively
• Regulatory compliance assurance with RoHS 3 and REACH standards, meeting global environmental and safety requirements
• Optimized for industrial durability through right-hand threading and rounded button head profile, resisting loosening in dynamic applications

Professional Applications & Engineering Value

Engineered to address critical challenges in industrial settings, this 316 stainless steel rounded head screw combines material excellence with precision manufacturing. The passivated finish significantly enhances corrosion resistance, making it suitable for chemical processing, marine equipment, and food-grade applications where moisture and aggressive agents are present. Its 6-32 UNC coarse threading and Class 3A fit ensure rapid installation and reliable thread engagement, reducing assembly time while maintaining joint integrity under vibration. The integrated flange design distributes clamping force evenly, preventing surface damage and minimizing stress concentration. With a 70,000 psi tensile strength and Rockwell B70 hardness, it withstands mechanical loads in machinery, electrical enclosures, and structural frameworks, delivering long-term reliability where failure is not an option.

Specification Summary & Compliance

This screw features 6-32 UNC coarse threads with Class 3A precision fit for exacting dimensional accuracy, measuring 1/4" in length and 0.138" in thread diameter. Manufacturing adheres to standardized inch system specifications, including a 5/64" hex drive and fully threaded design. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial components.