S-94967A367 1/4"-20 x 3/4" ASME B18.2.1, ASTM B117, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black protective coating that extends service life in harsh industrial environments
• Exceptional strength-to-weight ratio with Grade 5 classification and 120,000 psi tensile strength for demanding applications
• Reliable thread engagement through Class 2A UNC coarse threads that resist loosening under vibration
• Optimized installation efficiency with external hex drive design providing secure tool engagement and torque transmission
• Comprehensive thread coverage with fully threaded shank ensuring maximum grip length and load distribution
• Industry-standard compatibility meeting ASME B18.2.1, ASTM B117, and SAE J429 specifications for reliable performance
• Environmental compliance assurance with RoHS 3 and REACH compliance for global industrial applications

Professional Applications & Engineering Value

This Grade 5 hex head screw delivers exceptional engineering value through its black corrosion-resistant coated steel construction and 120,000 psi tensile strength. The fully threaded 1/4"-20 UNC coarse thread design provides superior holding power in structural assemblies, machinery, and heavy equipment where vibration resistance is critical. The external hex drive enables high-torque installation without stripping, while the Rockwell C25 hardness ensures durability against wear and deformation. Engineered to withstand demanding industrial environments, these screws solve common fastener failures by combining corrosion protection with mechanical strength, making them ideal for construction, manufacturing, and automotive applications where reliability cannot be compromised.

Specification Summary & Compliance

This fastener features precise Class 2A thread fit tolerance for consistent assembly performance and meets ASME B18.2.1 dimensional standards. The manufacturing process complies with ASTM B117 salt spray testing requirements and SAE J429 Grade 5 mechanical properties. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring safe use in global industrial markets. The combination of standardized dimensions and comprehensive compliance makes these screws suitable for quality-controlled manufacturing environments.