S-92620A870 3/4"-16 x 1 1/2" 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 provided by zinc yellow-chromate plating, extending service life in demanding industrial environments
• Enhanced thread engagement through UNF fine pitch design and Class 2A thread fit for secure fastening and vibration resistance
• Optimized torque transmission via external hex drive and substantial 1 1/8" head width for easy installation with standard tools
• Full thread coverage across the entire 1 1/2" length ensures maximum grip strength and uniform stress distribution
• Consistent hardness performance with Rockwell C33 rating maintains structural integrity under repeated loading conditions
• Regulatory compliance assurance meeting ASME, SAE, RoHS 3, and REACH standards for quality and environmental responsibility

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver critical engineering solutions where high tensile strength and reliable fastening are paramount. The steel construction with Rockwell C33 hardness provides exceptional durability for heavy machinery, structural assemblies, and industrial equipment subjected to dynamic loads and vibration. The UNF fine thread configuration offers superior resistance to loosening in high-vibration environments, while the zinc yellow-chromate plating protects against corrosion in outdoor or chemically aggressive settings. The fully threaded design ensures maximum engagement in thick materials, making these heavy-duty hex bolts ideal for construction, manufacturing, and automotive applications where failure is not an option.

Specification Summary & Compliance

This 3/4"-16 hex head screw features precision Class 2A thread fit tolerances with UNF fine thread spacing, manufactured to ASME B18.2.1 and SAE J429 specifications. The fastener maintains dimensional accuracy throughout its 1 1/2" length with consistent 0.75" thread diameter. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and material safety standards are met for industrial applications worldwide.