S-92220A204 1/4"-20 x 7/8" 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 demanding applications.
• Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in harsh industrial environments and minimizing maintenance needs.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies, enhancing joint integrity and operational safety.
• Low-profile socket head design allows installation in confined spaces while maintaining high torque capability with a 1/8" hex drive, optimizing space efficiency.
• Fully threaded UNC coarse thread enables faster installation and improved grip in a wide range of materials, speeding up assembly processes.
• High hardness (Rockwell C39) resists wear and deformation, ensuring long-term durability and consistent performance in repetitive use scenarios.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety, meeting rigorous industry and regulatory standards.

Professional Applications & Engineering Value

These low profile socket head cap screws are engineered to address common industrial challenges such as space constraints and high mechanical stress. The black-oxide alloy steel construction provides a durable, corrosion-resistant barrier, ideal for machinery, automotive, and equipment assembly where exposure to oils, moisture, or chemicals is a concern. The UNC coarse thread and Class 3A fit ensure quick, secure fastening with minimal risk of loosening under vibration, reducing downtime and maintenance costs. With a 1/4"-20 thread size and 7/8" length, they offer versatility in securing components while the hex drive allows for efficient torque application in tight spaces, enhancing productivity in precision engineering applications.

Specification Summary & Compliance

This socket head cap screw features a 1/4"-20 UNC coarse thread with a Class 3A thread fit for high precision, manufactured to ASTM A574 specifications for consistent quality. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards are met. Dimensions include a head diameter of 3/8", length of 7/8", and a low-profile design, all adhering to inch system measurements for reliable performance in industrial fastening applications.