S-92620A230 1/2"-13 x 5 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 Grade 8 classification and 150,000 psi tensile strength for reliable performance in high-stress applications
• Superior corrosion resistance through zinc yellow-chromate plating that provides enhanced protection against industrial environments
• Optimized installation efficiency with external hex drive and 3/4" head width for secure tool engagement and torque transmission
• Reduced cross-threading risk with Class 2A thread fit and UNC coarse threading for faster assembly in demanding conditions
• Extended service life backed by Rockwell C33 hardness that maintains structural integrity under repeated stress
• Versatile partial threading with 1 1/4" minimum thread length for flexible engagement in various material thicknesses
• Regulatory compliance assurance meeting ASME B18.2.1 standards and environmental regulations for global industrial use

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver critical engineering solutions where failure is not an option. The zinc yellow-chromate plated steel construction provides superior corrosion protection for outdoor equipment, machinery frames, and structural assemblies exposed to harsh environments. The 1/2"-13 UNC coarse threading ensures rapid installation in thick materials while resisting vibration-induced loosening. With partial threading and substantial 5 3/4" length, these fasteners accommodate varying material thicknesses in heavy construction, industrial machinery, and transportation equipment. The external hex drive design allows for high-torque installation, making them ideal for maintenance and manufacturing applications where access space is limited but maximum clamping force is required.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit tolerances with UNC coarse thread specifications ensuring consistent performance. Complies with ASME B18.2.1 standards for dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. The inch system measurements guarantee compatibility with North American industrial specifications and replacement part requirements.