S-92620A727 1/2"-13 x 4" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Maximum load-bearing capacity with 150,000 psi tensile strength for critical structural applications
• Superior corrosion resistance through zinc yellow-chromate plating in demanding environments
• Enhanced installation efficiency with external hex drive design for secure tool engagement
• Reliable thread performance featuring Class 2A UNC coarse threads for consistent fastening
• Full-length threading ensures complete engagement across the entire 4" length
• Exceptional hardness rating of Rockwell C33 maintains integrity under heavy stress
• Industry-standard compliance with ASME B18.2.1 and SAE J429 specifications

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver critical performance where failure is not an option. The zinc yellow-chromate plated steel construction provides exceptional corrosion protection in industrial environments, while the 1/2"-13 UNC coarse thread design ensures rapid installation and reliable holding power. The external hex drive allows for high-torque application without stripping, making these heavy-duty screws ideal for structural steel connections, heavy machinery assembly, and construction applications requiring 150,000 psi tensile strength. The fully threaded design maximizes surface contact for vibration resistance in dynamic load conditions.

Specification Summary & Compliance

This Grade 8 hex head screw features precise Class 2A thread fit tolerances with 1/2"-13 UNC coarse thread specifications. Manufactured to meet ASME B18.2.1 dimensional standards and SAE J429 material requirements, ensuring consistent performance across industrial applications. The 4" length with fully threaded design provides complete fastening capability, while the zinc yellow-chromate plating offers enhanced corrosion protection for extended service life in challenging environments.