S-92327A822 1/2"-13 x 1 1/4" ASME B18.2.1, SAE J429 Square Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capability with 120,000 PSI tensile strength and Rockwell C25 hardness for reliable performance in high-stress applications
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh industrial environments
• Enhanced torque application through external square drive design, preventing tool slippage during installation
• Optimized thread engagement with 1/2"-13 UNC coarse threads that resist vibration loosening and provide faster installation
• Precision manufacturing ensures Unified Standard Class 3A thread fit for consistent performance and proper mating with nuts
• Full threading along the 1 1/4" length allows for maximum adjustability and holding power throughout the entire fastener
• Industry compliance assurance meeting ASME B18.2.1 and SAE J429 specifications for guaranteed quality and reliability

Professional Applications & Engineering Value

This SAE Grade 5 square head screw delivers critical engineering solutions where vibration resistance and high tensile strength are paramount. The 1/2"-13 UNC coarse thread configuration provides exceptional pull-out resistance in wood, metal, and structural applications, while the external square drive design ensures secure tool engagement even in high-torque scenarios. The zinc yellow-chromate plating creates a protective barrier against corrosion, making these steel fasteners ideal for construction equipment, machinery assembly, and outdoor infrastructure where environmental exposure is a concern. With fully threaded design and Class 3A fit, these screws maintain consistent clamping force in heavy-duty industrial applications, reducing maintenance frequency and downtime.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Unified Standard Class 3A thread fit and UNC coarse thread specifications. The fastener complies with ASME B18.2.1 dimensional requirements and SAE J429 material and mechanical property standards. The 1/2"-13 thread size with 1 1/4" length provides standardized compatibility across industrial applications. The zinc yellow-chromate plating meets industry corrosion protection requirements while maintaining the SAE Grade 5 mechanical properties of 120,000 PSI tensile strength and Rockwell C25 hardness.