S-92865A549 1/4"-20 x 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 for reliable performance in demanding applications
• Superior corrosion resistance provided by zinc plating, extending service life in various environmental conditions
• Optimized thread engagement through UNC coarse threading and Class 2A fit, ensuring secure fastening and reduced cross-threading risk
• High-strength construction meeting Grade 5 standards with Rockwell C25 hardness for consistent durability under stress
• Efficient installation and removal with external hex drive design, allowing for high torque application with standard tools
• Full threading along the 2" length provides maximum grip and adjustment flexibility in assembled components
• Regulatory compliance assurance with RoHS 3 and REACH standards, meeting international environmental and safety requirements

Professional Applications & Engineering Value

These Grade 5 hex head screws deliver critical engineering solutions where structural integrity and long-term reliability are paramount. The combination of steel construction with zinc plating addresses common industrial challenges including corrosion prevention and environmental degradation. The UNC coarse thread profile ensures rapid assembly in heavy machinery, construction equipment, and structural frameworks where vibration resistance is essential. With fully threaded design and external hex drive, these fasteners provide uniform clamping force distribution and accommodate high-torque installation tools, making them ideal for industrial maintenance, equipment manufacturing, and infrastructure projects requiring predictable, repeatable fastening performance.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance ensuring consistent mating with corresponding nuts and tapped holes. These 1/4"-20 UNC coarse thread screws conform to ASME B18.2.1 and SAE J429 Grade 5 specifications, guaranteeing interchangeability and performance reliability. The fastener meets comprehensive regulatory requirements including RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) compliance for chemical safety, ensuring suitability for global industrial supply chains.