S-92620A800 5/8"-11 x 1 3/4" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Maximum Load-Bearing Capacity: Grade 8 classification and 150,000 psi tensile strength ensure reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior Corrosion Resistance: Zinc yellow-chromate plating provides a durable barrier against rust and environmental degradation, extending service life in harsh conditions.
• Enhanced Grip and Fastening Power: Fully threaded 5/8"-11 UNC coarse thread design offers excellent holding strength and faster installation in a wide range of materials.
• High Durability and Wear Resistance: Rockwell C33 hardness ensures the screw maintains its integrity and thread form under repetitive loading and vibration.
• Secure and Efficient Torque Application: External hex drive and standard 15/16" head width allow for high torque transfer with common tools, minimizing slippage.
• Precision Thread Fit: Class 2A thread fit provides consistent, reliable engagement with nuts and tapped holes, ensuring uniform clamping force.
• Broad Industry Compliance: Meets ASME B18.2.1, SAE J429, RoHS 3, and REACH standards, guaranteeing quality and environmental responsibility for global projects.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in heavy machinery, structural steel connections, and industrial equipment assembly. The zinc yellow-chromate plated steel construction combats corrosion in outdoor or chemically aggressive environments, preventing premature failure. With a fully threaded 5/8"-11 UNC coarse thread and Class 2A fit, it ensures rapid installation and superior vibration resistance, maintaining joint integrity under dynamic loads. The external hex drive facilitates high-torque tightening, making it ideal for applications requiring dependable, high-strength fastening solutions in construction, automotive, and manufacturing sectors.

Specification Summary & Compliance

This fastener features a 5/8"-11 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy. It is manufactured in compliance with ASME B18.2.1 and SAE J429 specifications, ensuring consistent quality and performance. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to strict environmental and safety regulations for hazardous substances.