S-97715A518 1/4"-20 x 5/16" Brass Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from high-quality brass construction, ensuring long-term reliability in humid or demanding industrial environments
• Precise Class 3A thread fit delivers secure, vibration-resistant fastening with minimal risk of loosening in critical assemblies
• High tensile strength of 50,000 psi provides exceptional load-bearing capacity for heavy-duty mechanical applications
• Convenient 5/32" hex drive allows for easy installation and removal with standard tools, reducing assembly time
• Fully threaded design ensures maximum grip length and consistent holding power across the entire fastener
• RoHS 3 and REACH compliance guarantees environmental safety and regulatory acceptance for global industrial supply chains
• Rockwell B55 hardness maintains thread integrity and prevents stripping during repeated installations

Professional Applications & Engineering Value

This brass rounded head screw combines material excellence with precision engineering to solve common industrial fastening challenges. The UNC coarse threading with Class 3A fit ensures rapid assembly while maintaining vibration resistance in machinery, electrical enclosures, and plumbing systems. The button head profile provides a low-profile finish that minimizes snagging in confined spaces. Brass construction offers natural corrosion resistance ideal for marine applications, chemical processing equipment, and outdoor installations where moisture exposure is concern. The hex drive design prevents cam-out during high-torque installation, making it particularly valuable for maintenance operations requiring repeated disassembly. With 50,000 psi tensile strength, this fastener reliably secures components in automotive, HVAC, and industrial manufacturing applications where mechanical stress is prevalent.

Specification Summary & Compliance

This fastener maintains Class 3A thread tolerance per UNC standards with 1/4"-20 coarse threading and fully threaded design. Manufacturing complies with RoHS 3 (2015/863/EU) with exemption 6(c) for lead in copper alloy and REACH (EC 1907/2006) compliance. The 5/16" length and 0.437" head diameter provide consistent dimensional accuracy for precision applications.