S-92620A332 1 1/4"-7 x 7" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional strength for critical applications with Grade 8 classification, 150,000 psi tensile strength, and Rockwell C33 hardness, ensuring reliable performance under extreme loads.
• Superior corrosion resistance provided by the zinc yellow-chromate plating, extending service life in harsh industrial environments.
• Optimized for heavy-duty assembly featuring a coarse 1-1/4"-7 UNC thread and Class 2A fit for quick installation and secure fastening in demanding conditions.
• Enhanced torque application with a 1 7/8" external hex head and 13/16" head height, allowing for high tightening forces without slippage.
• Versatile partial threading design on a 7" length, offering flexibility for applications requiring both threaded and unthreaded sections.
• Compliance with industry standards including ASME B18.2.1 and SAE J429, guaranteeing consistent quality and interchangeability.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements for safe use.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in heavy machinery, construction, and automotive sectors where high tensile strength and durability are paramount. The steel material combined with zinc yellow-chromate plating provides robust protection against corrosion, reducing maintenance costs in outdoor or corrosive settings. Its 1-1/4"-7 UNC coarse thread and Class 2A thread fit ensure rapid assembly and reliable grip in coarse-grained materials, minimizing the risk of stripping. The external hex drive and partially threaded 7-inch design allow for precise torque control and flexibility in varied joint configurations, making it ideal for structural frames, equipment mounts, and other heavy-duty applications requiring adherence to ASME B18.2.1 standards.

Specification Summary & Compliance

This fastener features a 1-1/4"-7 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy, ensuring easy installation and reliable performance. It complies with ASME B18.2.1 and SAE J429 specifications, confirming its manufacturing integrity. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, supporting sustainable and safe industrial use.