S-92220A188 1/4"-20 x 1 3/4" ASTM A574 Alloy Steel Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength (140,000 psi) ensures reliable performance in high-stress applications, reducing failure risks
• Black-oxide coating on alloy steel provides corrosion resistance and enhanced durability in demanding environments
• Low-profile socket head with 1/8" hex drive allows for easy installation in confined spaces with standard tools
• Class 3A thread fit and UNC coarse threading delivers precise, vibration-resistant fastening for industrial assemblies
• Partially threaded 1 3/4" design offers optimal grip length flexibility for various material thicknesses
• Rockwell C39 hardness rating maintains structural integrity under repeated loads and extreme conditions
• Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety for global supply chains

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Black-Oxide Alloy Steel Socket Head Cap Screws address critical challenges in machinery assembly, automotive components, and precision equipment. The low-profile head design combined with 1/4"-20 UNC coarse threads enables secure fastening in tight spaces where clearance is limited. With 140,000 psi tensile strength and Rockwell C39 hardness, they resist stripping, vibration loosening, and mechanical stress, ensuring long-term reliability in dynamic operating conditions. The black-oxide surface treatment further enhances corrosion resistance, making these screws ideal for harsh environments while maintaining consistent performance in B2B procurement scenarios demanding strict compliance and durability.

Specification Summary & Compliance

This 1/4"-20 UNC Socket Head Cap Screw features precise Class 3A thread fit and coarse thread spacing per standardized dimensions, with a minimum thread length of 1" and overall length of 1 3/4". Manufacturing adheres to ASTM A574 specifications for material consistency and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for international industrial markets.