S-92220A313 4-40 x 3/16" ASTM A574 Alloy Steel Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide alloy steel coating, extending service life in harsh environments
• Precise Class 3A thread fit ensures reliable, vibration-resistant fastening in critical assemblies
• Exceptional 140,000 psi tensile strength provides maximum load-bearing capacity for demanding applications
• Low-profile socket head design allows installation in confined spaces while maintaining hex drive functionality
• Full threading along 3/16" length delivers consistent gripping power across the entire fastener
• Rockwell C39 hardness rating guarantees durability and resistance to wear under repeated use
• Compliance with RoHS 3 and REACH regulations ensures environmental safety for industrial applications

Professional Applications & Engineering Value

These low profile socket head cap screws with 4-40 UNC coarse threads solve critical space constraints while maintaining high clamping force in precision equipment. The black-oxide alloy steel construction provides essential corrosion protection for industrial environments where moisture and chemicals are present. Engineered with Class 3A thread fit, these fasteners prevent loosening in vibrating machinery, making them ideal for aerospace components, automotive assemblies, and electronic enclosures. The hex drive socket ensures secure tool engagement during installation, while the fully threaded design maximizes connection integrity across the entire 3/16" length.

Specification Summary & Compliance

Manufactured to ASTM A574 specifications with Class 3A thread fit and UNC coarse threading. Features precise dimensional control with 0.050" hex drive and low profile head design. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.