S-92620A871 3/4"-16 x 1 3/4" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 150,000 psi ensures reliable performance in high-stress and heavy-duty applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the zinc yellow-chromate plating extends service life in harsh industrial environments, minimizing maintenance and replacement costs.
• High hardness rating (Rockwell C33) provides excellent wear resistance and durability, maintaining thread integrity under repeated use.
• Precision UNF fine threading with Class 2A fit offers secure, vibration-resistant connections, enhancing assembly stability and safety.
• Full threading along the 1 3/4" length allows for maximum grip and adjustability in a variety of material thicknesses.
• External hex drive design facilitates easy installation and removal with standard tools, improving workflow efficiency.
• Compliance with industry standards including ASME B18.2.1 and SAE J429 ensures consistent quality and interoperability in mechanical systems.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in demanding industrial settings, such as machinery assembly, structural frameworks, and heavy equipment manufacturing. The steel construction combined with a zinc yellow-chromate finish provides robust protection against corrosion and environmental wear, making it ideal for outdoor or high-moisture applications. The UNF fine thread and Class 2A fit ensure tight, reliable fastening that resists loosening under vibration—common in automotive, aerospace, and construction projects. By offering high tensile strength and precise threading, this fastener reduces assembly time and enhances the longevity of connected components, delivering consistent performance where safety and durability are paramount.

Specification Summary & Compliance

This screw adheres to precise dimensional tolerances with a Class 2A thread fit and follows the UNF fine thread standard (3/4"-16 size). It is manufactured in compliance with ASME B18.2.1 and SAE J429 specifications, ensuring reliability in mechanical applications. Additionally, it meets regulatory requirements including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming it is free from hazardous substances and safe for industrial use.