S-92865A548 1/4"-20 x 1 3/4" 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 for reliable performance in demanding applications
• Superior corrosion resistance through zinc plating, extending service life in harsh industrial environments
• Optimized thread engagement with UNC coarse threading ensuring quick assembly and vibration resistance
• Precise mechanical properties with Rockwell C25 hardness maintaining dimensional stability under stress
• Enhanced drive efficiency through external hex design providing secure tool engagement and torque transmission
• Consistent quality assurance with Grade 5 classification guaranteeing mechanical properties and reliability
• Broad compatibility with Class 2A thread fit enabling seamless integration with standard components

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 5 hex head screws deliver critical performance where fastener failure is not an option. The zinc plated steel construction provides essential corrosion protection for machinery, structural assemblies, and equipment subjected to environmental exposure. The UNC coarse thread design ensures rapid installation and superior resistance to vibrational loosening in dynamic load conditions. With full threading along the 1-3/4" length, these screws offer maximum grip range and adjustment flexibility. The external hex drive configuration enables high-torque installation using standard tools, making them ideal for production lines and maintenance operations requiring efficient, reliable fastening solutions.

Specification Summary & Compliance

This 1/4-20 x 1-3/4" hex head screw features Class 2A thread fit per ASME B18.2.1 specifications, ensuring precise dimensional accuracy and interchangeability. Manufactured to SAE J429 Grade 5 standards with verified mechanical properties including 120,000 psi tensile strength and Rockwell C25 hardness. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making these screws suitable for global industrial applications requiring regulatory adherence.