S-92620A323 1 1/4"-7 x 2" 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, extending service life in harsh industrial environments
• Optimized thread engagement with coarse UNC threading and Class 2A fit ensuring secure fastening and vibration resistance
• Enhanced installation efficiency featuring external hex drive and standard 1 7/8" head width for easy tool access and torque application
• Consistent mechanical properties with Rockwell C33 hardness maintaining dimensional stability under heavy loads
• Full-threaded design providing maximum grip length and uniform stress distribution along the entire 2" fastener length
• Regulatory compliance assurance meeting ASME, SAE, RoHS 3, and REACH standards for quality and environmental safety

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver critical engineering solutions for heavy machinery, structural assemblies, and industrial equipment where high tensile strength and corrosion resistance are paramount. The zinc yellow-chromate plating creates a protective barrier against oxidation and chemical exposure, significantly extending maintenance intervals in demanding environments. The 1 1/4"-7 UNC coarse thread design ensures rapid installation and superior resistance to vibrational loosening, while the external hex drive configuration accommodates standard industrial tools for efficient assembly operations. Engineered to withstand extreme mechanical stresses, these fully threaded screws provide uniform clamping force distribution across the entire 2" length, making them ideal for critical joints in construction, automotive, and manufacturing applications where failure is not an option.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit tolerances with UNC coarse threading (1 1/4"-7) ensuring consistent engagement and interchangeability. Complies with ASME B18.2.1 and SAE J429 Grade 8 specifications for dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards, confirming absence of restricted substances. The inch system measurement guarantees compatibility with North American industrial standards and replacement part requirements.