S-92327A308 1/2"-13 x 2 1/2" ASME B18.2.1, SAE J429 Square Head Screws
Square Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional load-bearing capacity with 120,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion resistance through zinc yellow-chromate plating, extending service life in harsh environments
- Secure installation and removal with external square drive design that prevents tool slippage under high torque
- Precision thread engagement with Unified Standard Class 2A fit ensuring consistent fastening performance
- Enhanced durability from Rockwell C25 hardness that maintains structural integrity under repeated stress
- Versatile coarse threading (UNC) for faster installation and better performance in softer materials
- Full threading coverage along the 2½" length provides maximum grip strength across the entire fastener
Professional Applications & Engineering Value
This SAE Grade 5 square head screw delivers critical engineering solutions for industrial applications where vibration resistance and structural integrity are paramount. The 1/2"-13 UNC coarse thread configuration ensures rapid installation while maintaining holding power in machinery, construction equipment, and heavy-duty assemblies. The zinc yellow-chromate plating provides essential corrosion protection for outdoor applications or environments with moisture exposure. The external square drive design offers superior torque transmission compared to standard hex heads, making these square head screws ideal for high-torque applications where fastener security cannot be compromised. With full threading along the entire 2½" length, this fastener maximizes thread engagement for critical structural connections.
Specification Summary & Compliance
This square head screw features precision Unified Standard Class 2A thread fit with 1/2"-13 UNC coarse threading and right-hand thread direction. Manufactured from high-strength steel with Rockwell C25 hardness and 120,000 psi tensile strength, the fastener meets SAE Grade 5 requirements. Compliance with ASME B18.2.1 and SAE J429 specifications ensures consistent quality and performance for industrial applications. The zinc yellow-chromate plating provides corrosion resistance while maintaining dimensional accuracy per established industrial standards.
