S-92198A557 1/4"-20 x 3 3/4" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
• Reliable fastening performance through UNC coarse threads and Class 2A thread fit ensuring precise engagement
• Easy installation and removal with external hex drive and 7/16" head width for standard wrench compatibility
• Optimized load distribution with partial threading design and 3/4" minimum thread length
• Long-term durability in demanding conditions thanks to compliant surface treatment and material properties
• Regulatory compliance assurance meeting ASME B18.2.1 standards and environmental regulations

Professional Applications & Engineering Value

This 1/4"-20 UNC Hex Head Screw delivers critical engineering value through its 18-8 Stainless Steel composition and partially threaded design. The coarse thread configuration provides superior resistance to vibration loosening in heavy machinery, while the external hex drive enables high-torque installation in confined spaces. With 80,000 psi tensile strength and Rockwell B70 hardness, it maintains structural integrity under extreme loads in construction, manufacturing, and marine applications. The corrosion-resistant properties ensure long-term reliability in chemically aggressive environments, reducing maintenance frequency and replacement costs across industrial operations.

Specification Summary & Compliance

Manufactured to ASME B18.2.1 specifications with Class 2A thread fit tolerance for consistent engagement. Features 1/4"-20 UNC coarse threads with right-hand direction and 3 3/4" overall length. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.