S-92327A425 1"-8 x 5" 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 demanding industrial applications
• Superior corrosion resistance through zinc yellow-chromate plating, extending service life in harsh environments
• Optimized installation efficiency with external square drive design providing maximum torque transmission and reduced slipping
• Enhanced thread engagement through 1"-8 UNC coarse threading, ensuring secure fastening in various materials
• Consistent quality assurance meeting ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and performance reliability
• Robust material performance with Rockwell C25 hardness and SAE Grade 5 classification for medium-strength applications
• Full-threaded design offering maximum grip length and adjustment flexibility across the entire 5" length

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 5 Square Head Screw delivers critical performance where structural integrity matters most. The zinc yellow-chromate plated steel construction provides essential corrosion protection in manufacturing environments, construction sites, and machinery assembly where exposure to elements is common. The 1"-8 UNC coarse thread configuration ensures rapid installation and superior holding power in wood, metal, and composite materials, while the external square drive design prevents tool slippage during high-torque applications. With full threading across its 5" length, this fastener offers maximum adjustability and load distribution, making it ideal for structural connections, equipment mounting, and heavy machinery maintenance where vibration resistance and long-term reliability are paramount.

Specification Summary & Compliance

This square head screw maintains Unified Standard Class 2A thread fit for precise dimensional accuracy and consistent performance. Manufactured in compliance with ASME B18.2.1 and SAE J429 specifications, ensuring standardized dimensions, mechanical properties, and quality requirements. The fastener features right-hand UNC coarse threading with 1"-8 thread size and full threading along the 5" length. The zinc yellow-chromate plating provides corrosion protection while maintaining the SAE Grade 5 strength classification with 120,000 psi tensile strength and Rockwell C25 hardness rating.