S-92865A358 1/2"-20 x 2 1/2" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 120,000 psi tensile strength, ideal for high-stress industrial applications
• Superior corrosion resistance through zinc plating, extending service life in harsh environments
• Precision thread engagement with Class 2A fit UNF fine threading for vibration-resistant connections
• Optimized torque transmission via external hex drive design preventing tool slippage during installation
• Grade 5 reliability backed by Rockwell C25 hardness for consistent performance under heavy loads
• Full threading versatility allowing installation through varying material thicknesses
• Regulatory compliance assurance meeting ASME B18.2.1/SAE J429 standards for quality consistency

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 5 hex head screws deliver critical performance where structural integrity matters most. The zinc plated steel construction combats environmental degradation in manufacturing facilities, construction sites, and machinery assembly. UNF fine threading with Class 2A fit ensures precise engagement in tapped holes, reducing the risk of cross-threading while maintaining clamping force under vibration. The external hex drive accommodates high-torque installation, making these fully threaded fasteners ideal for demanding applications from structural steel connections to heavy equipment maintenance where 120,000 psi tensile strength provides a safety margin against joint failure.

Specification Summary & Compliance

Manufactured to ASME B18.2.1 and SAE J429 Grade 5 specifications with Class 2A thread fit tolerance. Compliant with RoHS 3 (2015/863/EU) environmental directives. Features 1/2"-20 UNF fine threads in right-hand direction, 2 1/2" length, and Rockwell C25 hardness certification.