S-92220A182 1/4"-20 x 3/8" ASTM A574 Alloy Steel Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength (140,000 psi) ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Black-Oxide surface treatment provides corrosion resistance, extending service life in harsh industrial environments and minimizing maintenance needs.
• Class 3A thread fit offers superior precision and tighter tolerances for secure, vibration-resistant assemblies, enhancing joint integrity.
• Low-profile socket head design allows for installation in confined spaces while maintaining high torque capability with a standard hex drive.
• Rockwell C39 hardness ensures excellent wear resistance and durability, supporting repeated use without degradation.
• Full threading enables consistent engagement along the entire length, providing uniform clamping force and versatility in various mounting scenarios.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees adherence to rigorous industry standards for safety, environmental responsibility, and material quality.

Professional Applications & Engineering Value

These Black-Oxide alloy steel socket head cap screws are engineered to address common industrial challenges, such as vibration loosening and corrosion-induced failure. The 1/4"-20 UNC coarse thread and Class 3A fit ensure quick assembly and reliable fastening in machinery, automotive, and aerospace components, where precision and strength are critical. The low-profile head and hex drive facilitate easy installation in tight spaces, reducing assembly time and improving efficiency. With high tensile strength and corrosion resistance, they provide long-term reliability in demanding environments, minimizing downtime and maintenance costs for B2B clients.

Specification Summary & Compliance

This product adheres to precise dimensional standards, including Class 3A thread fit for tight tolerances and UNC coarse threading with a 1/4"-20 size. It meets manufacturing specifications under ASTM A574 for consistent quality and performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) ensures environmental safety and regulatory adherence, supporting sustainable industrial practices.