S-92620A114 1/4"-32 x 1 1/2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Maximum Load-Bearing Capability with 150,000 psi tensile strength and Rockwell C33 hardness for reliable performance in high-stress applications
• Superior Corrosion Resistance through zinc yellow-chromate plating that protects against rust and extends service life in harsh environments
• Precision Thread Engagement with UNEF extra fine threading and Class 2A fit ensuring secure fastening and vibration resistance
• Optimized Torque Transmission via external hex drive design that prevents tool slippage during installation
• Industry Standard Compliance meeting ASME B18.2.1 and SAE J429 specifications for guaranteed interchangeability and quality
• Versatile Partial Threading design providing both threaded engagement and smooth shank benefits for varied clamping requirements
• Heavy-Duty Construction using Grade 8 steel material that withstands extreme mechanical stresses and repetitive loading

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver exceptional engineering value in demanding industrial applications where failure is not an option. The combination of 150,000 psi tensile strength and Rockwell C33 hardness makes them ideal for heavy machinery, automotive assemblies, and structural frameworks requiring reliable high-strength fasteners. The UNEF extra fine threading with Class 2A fit provides superior resistance to vibration loosening, while the zinc yellow-chromate plating offers enhanced corrosion protection in outdoor or chemically aggressive environments. The partially threaded design allows for precise clamping force distribution, making these steel hex bolts perfect for applications requiring both threaded engagement and unthreaded shank support. Their compliance with ASME B18.2.1 and SAE J429 standards ensures consistent performance and dimensional accuracy across industrial applications.

Specification Summary & Compliance

These 1/4"-32 hex head screws feature precision Class 2A thread fit with UNEF extra fine threading (32 threads per inch) and are manufactured to exact ASME B18.2.1 and SAE J429 specifications. The Grade 8 classification guarantees mechanical properties including 150,000 psi minimum tensile strength and Rockwell C33 hardness. The zinc yellow-chromate plating provides corrosion resistance while maintaining dimensional stability. The 1-1/2" length with 3/4" minimum thread length ensures proper engagement in various material thicknesses. These industrial fasteners are manufactured to meet rigorous quality standards for dimensional accuracy and mechanical performance in critical applications.