S-92865A008 1/4"-28 x 1" 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 that extends service life in various industrial environments
• Precise thread engagement with Class 2A UNF fine threads ensuring secure, vibration-resistant connections
• Optimized torque transmission through external hex drive design for efficient installation and removal
• Enhanced durability with Rockwell C25 hardness providing excellent wear resistance and thread integrity
• Full-length threading for maximum grip length and consistent clamping force distribution
• Regulatory compliance meeting ASME B18.2.1 and SAE J429 standards for quality assurance

Professional Applications & Engineering Value

These Grade 5 hex head screws deliver exceptional engineering value in industrial settings where high tensile strength and reliable fastening are critical. The zinc plated steel construction provides essential corrosion protection for machinery, equipment assemblies, and structural applications exposed to demanding environments. The 1/4"-28 UNF fine thread configuration offers superior resistance to vibration loosening compared to coarse threads, making these fully threaded screws ideal for precision assemblies requiring consistent clamping force. The external hex drive design ensures efficient installation with standard tools, while the Class 2A thread fit guarantees proper engagement without binding. These industrial fasteners solve common engineering challenges by combining 120,000 psi tensile strength with regulatory compliance for dependable performance in automotive, manufacturing, and heavy equipment applications.

Specification Summary & Compliance

This 1/4"-28 hex head screw features precision Class 2A thread fit with UNF fine thread spacing, manufactured to exacting ASME B18.2.1 and SAE J429 Grade 5 specifications. The fastener demonstrates full compliance with RoHS 3 (2015/863/EU) environmental directives and REACH (EC 1907/2006) regulations, ensuring adherence to the latest industry standards for hazardous substance restrictions. The product maintains dimensional accuracy per inch system requirements with Rockwell C25 hardness and 120,000 psi tensile strength verification.