S-92327A279 3/8"-16 x 1" ASME B18.2.1, SAE J429 Square Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 120,000 psi tensile strength for reliable performance in high-stress applications
• Superior corrosion resistance through zinc yellow-chromate plating that protects against harsh industrial environments
• Optimized torque transmission with external square drive design that prevents stripping during high-torque installation
• Consistent thread engagement with Unified Standard Class 2A fit ensuring precise assembly and vibration resistance
• Enhanced durability from Rockwell C25 hardness that maintains structural integrity under repeated stress
• Wide compatibility with 3/8"-16 UNC coarse threads that provide faster installation in various materials
• Industry compliance assurance meeting ASME B18.2.1 and SAE J429 standards for quality and reliability

Professional Applications & Engineering Value

This SAE Grade 5 square head screw delivers critical engineering solutions for demanding industrial applications where failure is not an option. The combination of medium strength rating and fully threaded design provides uniform stress distribution across the entire fastener length, preventing localized failure points in heavy machinery, structural steel connections, and construction assemblies. The zinc yellow-chromate plating creates a protective barrier against corrosion in outdoor environments or chemical exposure, significantly extending service life. The external square drive offers superior torque transmission compared to standard hex heads, making these square head screws ideal for high-vibration equipment, agricultural machinery, and industrial maintenance where secure fastening is paramount. The coarse UNC thread ensures rapid installation in steel, wood, and composite materials while maintaining exceptional pull-out resistance.

Specification Summary & Compliance

This 3/8"-16 UNC square head screw features precise Unified Standard Class 2A thread tolerances for consistent fit and performance. Manufactured to exacting ASME B18.2.1 dimensional specifications and SAE J429 material standards, the fastener delivers guaranteed mechanical properties including 120,000 psi tensile strength and Rockwell C25 hardness. The zinc yellow-chromate plating meets industry corrosion protection requirements while the 1" length and fully threaded configuration provide versatile application solutions. All materials and processes comply with RoHS and REACH environmental directives for safe industrial use.