S-92220A184 1/4"-20 x 5/8" ASTM A574 Alloy Steel Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 140,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in critical applications.
• Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in demanding industrial environments.
• Precision Class 3A thread fit provides consistent, secure fastening with minimal play, enhancing assembly accuracy and reducing rework.
• Low-profile socket head design allows for installation in tight spaces while maintaining high torque capability with a 1/8" hex drive.
• Full threading along the 5/8" length offers maximum grip and adjustability, ideal for applications requiring deep engagement.
• Rockwell C39 hardness ensures excellent wear resistance and durability, maintaining thread integrity through repeated use.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees adherence to industry standards and environmental regulations, supporting global supply chain requirements.

Professional Applications & Engineering Value

These low-profile socket head cap screws are engineered to address common challenges in precision machinery, automotive assemblies, and heavy-duty equipment. The black-oxide alloy steel construction provides robust resistance to rust and wear, crucial for maintaining performance in humid or abrasive conditions. With a coarse UNC thread and Class 3A fit, these screws ensure quick, reliable installation without cross-threading, reducing assembly time and improving productivity. The right-hand threading and fully threaded design offer consistent clamping force, making them ideal for securing components in aerospace, manufacturing, and electronics where vibration resistance and space constraints are critical. By combining high tensile strength with a compact head profile, these fasteners deliver long-term reliability in demanding applications.

Specification Summary & Compliance

This product features precise Class 3A thread fit per UNC standards, ensuring tight tolerances for secure fastening. Manufacturing adheres to ASTM A574 specifications, guaranteeing material consistency and performance. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming the absence of restricted substances and supporting environmental safety in industrial use.