S-92620A233 1"-8 x 3 3/4" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 150,000 psi tensile strength and Grade 8 classification for reliable performance in high-stress applications
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in demanding industrial environments
• Optimized thread engagement through 1"-8 UNC coarse threading and Class 2A fit, ensuring secure fastening and reduced cross-threading risks
• Enhanced torque transmission via the external hex drive and substantial 1 1/2" head width, allowing for high tightening forces without slippage
• Robust material integrity with Rockwell C33 hardness, maintaining structural stability under repeated stress and vibration
• Versatile partial threading design combining 2 1/4" minimum thread length with 3 3/4" overall length for flexible application across various material thicknesses
• Regulatory compliance assurance meeting ASME B18.2.1, SAE J429 standards, plus RoHS 3 and REACH environmental directives

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 8 hex head screw addresses critical challenges in construction, machinery assembly, and structural frameworks where high tensile strength and vibration resistance are paramount. The zinc yellow-chromate plated steel construction provides superior corrosion protection in harsh environments, while the 1"-8 UNC coarse threading ensures rapid installation and reliable grip in various materials. The partially threaded design with external hex drive offers optimal clamping force distribution, making it ideal for equipment requiring precise joint integrity. These industrial hex screws deliver consistent performance in automotive, manufacturing, and infrastructure projects where failure is not an option.

Specification Summary & Compliance

This heavy-duty hex bolt maintains precise Class 2A thread fit tolerances with 1"-8 UNC coarse threading and right-hand thread direction. Manufactured to ASME B18.2.1 and SAE J429 specifications, it ensures dimensional accuracy and mechanical reliability. The fastener demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial supply chains. With 3 3/4" length and partially threaded configuration, it meets rigorous quality standards for high-strength fasteners in critical applications.