S-92620A564 1/4"-28 x 1" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Maximum Load-Bearing Capacity: With a tensile strength of 150,000 psi and Rockwell C33 hardness, this screw ensures reliable performance in high-stress industrial environments, reducing the risk of fastener failure.
• Superior Corrosion Resistance: The zinc yellow-chromate plating provides excellent protection against rust and environmental degradation, extending service life in harsh conditions.
• Precise Thread Engagement: UNF fine threads with Class 2A fit offer secure, vibration-resistant fastening, minimizing loosening in dynamic applications.
• Easy Installation and Removal: The external hex drive and hex head design allow for straightforward torque application with standard tools, saving time during assembly and maintenance.
• Full Thread Coverage: Fully threaded design ensures consistent grip along the entire 1" length, enhancing holding power in various material thicknesses.
• Compliance with Industry Standards: Meets ASME B18.2.1 and SAE J429 specifications, guaranteeing dimensional accuracy and interoperability in professional settings.
• Environmental and Safety Compliance: RoHS 3 and REACH compliant, ensuring safe use in regulated industries without hazardous substances.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered for demanding applications where strength and durability are critical. Made from high-grade steel and featuring a UNF fine thread with Class 2A fit, it provides secure fastening in machinery, automotive assemblies, and structural frameworks. The zinc yellow-chromate plating enhances corrosion resistance, making it ideal for outdoor or humid environments. Its 150,000 psi tensile strength and Rockwell C33 hardness prevent stripping and shearing under heavy loads, solving common issues like joint failure and maintenance downtime. Whether used in construction, manufacturing, or equipment repair, this screw delivers consistent performance, reducing replacement costs and improving operational reliability.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including Class 2A thread fit for accurate engagement and UNF fine thread specifications. It complies with ASME B18.2.1 and SAE J429 manufacturing norms, ensuring consistent quality. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for global industrial use.