S-90316A203 8-32 x 1 1/4" 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 reducing replacement costs
• Exceptional holding power from 100,000 psi tensile strength, ensuring reliable, long-lasting connections in demanding applications
• Integrated flange design eliminates the need for a separate washer, providing a larger bearing surface for improved load distribution and faster installation
• High durability with a Rockwell B100 hardness, offering excellent resistance to wear and deformation
• Reliable coarse threading (UNC) facilitates quick and easy installation, even in softer materials or where debris is present
• Precise Class 2A thread fit ensures consistent, smooth engagement with nuts and tapped holes, reducing the risk of cross-threading
• Versatile external hex/slotted drive provides flexibility for use with various standard tools, enhancing assembly efficiency

Professional Applications & Engineering Value

This 8-32 UNC hex head screw is engineered to solve critical fastening challenges in industrial and construction settings. The 18-8 stainless steel material provides excellent resistance to oxidation and corrosion, making it a durable choice for outdoor equipment, marine applications, and chemical processing environments where moisture is a concern. The flanged design increases stability and clamping force, preventing loosening under vibration—a common failure point in machinery and automotive assemblies. Its coarse thread and fully threaded body allow for rapid installation and maximum grip length in a variety of substrates. This combination of a high-strength body and a versatile external hex drive makes it an indispensable component for engineers seeking to enhance the reliability and service life of their assemblies.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, featuring an 8-32 UNC thread with a Class 2A fit for consistent interchangeability. It is manufactured in compliance with the ASME B18.6.3 specification, ensuring quality and reliability. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for hazardous substances.