S-90316A537 1/4"-20 x 1/2" 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 industrial environments
• High tensile strength of 100,000 psi ensures reliable performance in demanding applications
• Flanged hex head design provides increased bearing surface and prevents pull-through
• External hex/slotted drive offers versatile installation options with standard tools
• Class 2A thread fit guarantees consistent engagement and easy assembly
• Coarse UNC threading enables rapid installation and superior vibration resistance
• Full threading along the 1/2" length maximizes grip strength and load distribution

Professional Applications & Engineering Value

This 18-8 stainless steel hex head screw delivers exceptional engineering value for industrial fastening applications where corrosion resistance and mechanical strength are critical. The combination of UNC coarse threads and Class 2A thread fit ensures reliable performance in high-vibration environments, while the flanged design eliminates the need for separate washers, reducing assembly time and component count. The external hex/slotted drive accommodates multiple installation methods, making it ideal for machinery assembly, structural frameworks, and equipment maintenance where accessibility varies. With its 100,000 psi tensile strength and Rockwell B100 hardness, this fastener maintains integrity under substantial loads, solving common failure points in industrial settings.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC thread specifications. Complies with ASME B18.6.3 manufacturing standards and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. Features include 1/4"-20 thread size, 1/2" length, 3/8" head width, and right-hand threading direction for standardized industrial applications.