S-92220A212 1/4"-28 x 3/4" 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.
• Superior corrosion resistance from the black-oxide finish extends service life in harsh industrial environments, minimizing maintenance needs.
• Precise Class 3A thread fit provides tight tolerances for secure, vibration-resistant assemblies, enhancing overall joint integrity.
• Low-profile socket head design allows for installation in confined spaces while maintaining high torque capability with a 1/8" hex drive.
• Fully threaded construction offers consistent clamping force along the entire 3/4" length, improving load distribution.
• High hardness (Rockwell C39) resists wear and deformation, ensuring durability in repetitive or high-load applications.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety, meeting global industry standards.

Professional Applications & Engineering Value

These 1/4"-28 UNF socket head cap screws are engineered to address critical challenges in precision assemblies, such as machinery, automotive systems, and aerospace components. The black-oxide alloy steel construction combats corrosion and wear, while the fine thread spacing and Class 3A thread fit ensure minimal backlash and superior vibration resistance in dynamic environments. The low-profile head design is ideal for applications with limited clearance, without compromising on the high tensile strength needed for heavy-duty fastening. By integrating these screws, engineers achieve enhanced reliability, reduced downtime, and compliance with stringent industry regulations, making them a trusted choice for demanding industrial fasteners.

Specification Summary & Compliance

This product adheres to precise dimensional standards, including a Class 3A thread fit for tight tolerances and UNF fine threads with a 1/4"-28 size. It meets ASTM A574 specifications for alloy steel socket head cap screws, ensuring consistent manufacturing quality. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming environmental safety and regulatory adherence for global use.