S-90193A125 1/4"-20 x 5/8" ASME B18.6.3 Stainless Steel Flanged Hex Head Screws with Slotted Drive

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction for extended service life in harsh environments
• Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B100 hardness for heavy-duty applications
• Reliable thread engagement with Class 2A UNC coarse threads ensuring consistent fastening performance
• Enhanced load distribution through integrated flange design reducing surface pressure and preventing loosening
• Industry-standard compliance meeting ASME B18.6.3 specifications for dimensional accuracy and performance
• Full-threaded design providing maximum grip length and superior holding power throughout the fastener
• Environmental regulation compliance with RoHS 3 and REACH standards for safe industrial use

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 316 stainless steel hex head screws deliver exceptional performance where corrosion resistance and mechanical reliability are critical. The UNC coarse thread configuration ensures rapid installation and superior vibration resistance in applications ranging from marine equipment to chemical processing systems. The flanged design eliminates the need for separate washers while providing enhanced bearing surface, making them ideal for assembly lines requiring both speed and reliability. With fully threaded construction and external hex drive, these fasteners offer maximum engagement depth and straightforward installation using standard tools, significantly reducing assembly time in high-volume manufacturing and maintenance operations.

Specification Summary & Compliance

This 1/4"-20 x 5/8" hex head screw features precision Class 2A thread fit with UNC coarse thread spacing, ensuring consistent performance across industrial applications. Manufactured to exacting ASME B18.6.3 standards for dimensional accuracy, the fastener maintains tight tolerances with 3/8" head width and 3/16" head height. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental safety and material quality, making these screws suitable for regulated industries requiring documented compliance.