S-97715A558 5/16"-18 x 1 1/2" Brass Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with brass construction for long-lasting performance in harsh industrial environments
• Exceptional 50,000 psi tensile strength ensures reliable fastening under high-stress applications
• Precision Class 3A thread fit provides secure, vibration-resistant connections with minimal play
• Easy installation and removal with 3/16" hex drive design for efficient maintenance operations
• Full threading along 1½" length offers maximum engagement and holding power
• Durable Rockwell B55 hardness maintains thread integrity through repeated use
• Compliant with RoHS 3 and REACH regulations for safe use in regulated industries

Professional Applications & Engineering Value

These brass rounded head screws with 5/16"-18 UNC coarse threading are engineered to solve critical challenges in electrical, marine, and plumbing applications where corrosion resistance is paramount. The Class 3A thread fit ensures precise engagement that prevents loosening from vibration, while the button head profile provides a low-profile finish that reduces snagging in tight spaces. The combination of 50,000 psi tensile strength and Rockwell B55 hardness makes these fully threaded screws ideal for demanding industrial environments where reliability cannot be compromised. The 3/16" hex drive facilitates quick installation in hard-to-reach areas, saving valuable maintenance time while delivering consistent performance.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 3A thread fit tolerance and UNC coarse thread specification. These rounded head screws feature a standard button head profile with 0.547" head diameter and 1½" fully threaded length. Compliant with RoHS 3 (2015/863/EU) under exemption 6(c) for lead in copper alloy and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety standards are met for industrial applications.