S-90316A553 1/4"-20 x 2" ASME B18.6.3 Stainless Steel Flanged Hex Head Screws with Slotted Drive

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and extended service life
• Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B100 hardness for reliable performance under heavy loads
• Secure and efficient assembly thanks to the UNC coarse thread and Class 2A fit, ensuring consistent engagement and reducing cross-threading risks
• Enhanced stability and load distribution from the integrated flange design, minimizing surface damage and providing a larger bearing area
• Versatile drive options with an external hex/slotted head, offering flexibility for various installation tools and access situations
• Full threading for maximum grip along the entire 2" length, providing uniform clamping force across the entire fastened joint
• Guaranteed quality and safety through compliance with ASME B18.6.3, RoHS 3, and REACH, ensuring material consistency and environmental responsibility

Professional Applications & Engineering Value

This 18-8 Stainless Steel hex head screw is engineered to address critical challenges in demanding industrial settings. Its corrosion-resistant material prevents degradation in moist or chemically aggressive environments, significantly reducing maintenance needs and replacement costs. The combination of 100,000 psi tensile strength and UNC coarse threading ensures reliable fastening in high-vibration applications, such as heavy machinery, structural assemblies, and transportation equipment, where joint integrity is paramount. The flanged design distributes clamping force effectively, protecting softer materials from damage and eliminating the need for separate washers. This makes it an excellent choice for industrial applications requiring durable, high-performance hex head screws that maintain their hold under stress.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC thread with a Class 2A fit for standard tolerance and easy assembly. It is manufactured in compliance with the ASME B18.6.3 standard, ensuring dimensional accuracy and mechanical performance. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to strict regulations on hazardous substances and chemical safety.