S-94444A108 1/4"-20 x 2 1/2" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide 18-8 Stainless Steel construction, ideal for harsh environments and reducing maintenance costs
• High tensile strength of 80,000 psi ensures reliable load-bearing capacity and prevents failure in demanding applications
• Rockwell B70 hardness provides excellent wear resistance and durability for extended service life
• UNC coarse threading enables faster installation and reduced cross-threading risks in coarse materials
• Partial threading design offers optimal grip and clamping force control for precise assembly requirements
• External hex drive with 7/16" head width allows for high-torque application using standard tools, improving installation efficiency
• Class 2A thread fit ensures consistent, reliable engagement with nuts and tapped holes while maintaining easy assembly

Professional Applications & Engineering Value

This 1/4"-20 hex head screw delivers exceptional engineering value in industrial applications where corrosion resistance and structural integrity are critical. The Black-Oxide 18-8 Stainless Steel material provides superior protection against rust and chemical exposure, making it ideal for outdoor equipment, marine environments, and chemical processing facilities. The UNC coarse thread configuration ensures rapid installation in metals, plastics, and composite materials, while the partial threading design prevents over-tightening and provides controlled clamping force. With its external hex drive and substantial head dimensions, this fastener accommodates high torque requirements in machinery assembly, structural frameworks, and heavy-duty equipment maintenance, solving common challenges of fastener loosening and material degradation in demanding operational conditions.

Specification Summary & Compliance

This hex head screw maintains Class 2A thread fit tolerance for consistent mating with standard nuts and threaded components. Manufacturing complies with ASME B18.2.1 specifications for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in regulated industries and international markets.