S-90696A228 1/2"-20 x 2 3/4" ASME B18.3 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Superior load-bearing capability with 70,000 psi tensile strength for demanding applications
• Precise thread engagement through Class 3A fine threads ensuring vibration resistance and secure fastening
• Optimized torque transmission with 3/8" hex drive and standard socket head profile preventing cam-out
• Versatile partial threading allowing unthreaded shank sections for precise component alignment
• Consistent mechanical performance maintained through Rockwell B70 hardness rating
• Regulatory compliance assurance meeting ASME B18.3 standards and environmental regulations

Professional Applications & Engineering Value

Engineered for precision assembly in industrial machinery, automotive systems, and heavy equipment, these socket head cap screws address critical fastening challenges. The 18-8 Stainless Steel composition provides inherent corrosion resistance, eliminating premature failure in humid or chemical-exposed environments. With Class 3A UNF fine threads and partial threading design, these fasteners deliver superior clamp load distribution while preventing loosening under vibration - a common failure point in dynamic applications. The 3/8" hex drive interface enables high-torque installation in confined spaces, making them ideal for precision engineering applications where access limitations exist. This combination of material properties and mechanical design ensures reliable performance in high-stress assemblies.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit ensuring precise dimensional accuracy. The 1/2"-20 UNF fine thread configuration maintains tight tolerances while the partially threaded design (1-1/2" minimum thread length) provides optimal unthreaded shank engagement. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations guarantees material safety standards. Mechanical properties include Rockwell B70 hardness and 70,000 psi tensile strength for consistent performance in inch-system applications.