S-94967A412 1/4"-20 x 2" ASME B18.2.1, ASTM B117, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 120,000 psi tensile strength, ideal for high-stress industrial assemblies
• Superior corrosion resistance from black-coated steel, extending service life in harsh environments
• Reliable thread engagement with Class 2A UNC coarse threads ensuring secure fastening and vibration resistance
• Optimized drive efficiency through external hex head design for high-torque installation with standard tools
• Full-threaded shank design providing consistent clamping force along the entire 2" length
• Grade 5 strength certification guaranteeing consistent mechanical performance in demanding applications
• Rockwell C25 hardness maintaining structural integrity under repeated stress and impact loads

Professional Applications & Engineering Value

Engineered for industrial machinery, structural frameworks, and heavy equipment assembly, these Grade 5 hex head screws address critical fastening challenges through their black corrosion-resistant coating that prevents rust formation in humid or chemically aggressive environments. The 1/4"-20 UNC coarse threading combined with Class 2A thread fit ensures rapid installation and superior vibration resistance, reducing maintenance intervals in dynamic applications. With full threading along the 2" length, these external hex drive fasteners provide uniform stress distribution, eliminating weak points in critical joints while the 120,000 psi tensile strength maintains joint integrity under extreme operational loads.

Specification Summary & Compliance

Manufactured to ASME B18.2.1 dimensional standards with Class 2A thread tolerances for precise fitment. Compliant with ASTM B117 salt spray testing requirements and SAE J429 Grade 5 mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards for industrial use.