S-97595A316 5/16"-18 x 1 1/2" ASME B18.3 Brass Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from high-quality brass construction, ensuring long-lasting performance in harsh environments
• Precise flush mounting capability with 82° countersink angle and flat head design for seamless surface integration
• Exceptional thread reliability through Class 3A thread fit and UNC coarse threading for secure fastening in various materials
• High mechanical strength with 50,000 psi tensile strength and Rockwell B55 hardness for demanding applications
• Efficient installation using 3/16" hex drive for quick, secure torque application without cam-out
• Full threading coverage across the entire 1-1/2" length for maximum grip and load distribution
• Regulatory compliance assurance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

These 5/16"-18 UNC brass flat head screws deliver critical engineering solutions where corrosion resistance and precise flush mounting are paramount. The brass material provides excellent protection against oxidation and galvanic corrosion, making them ideal for marine, electrical, and plumbing applications. The Class 3A thread fit ensures tight tolerances for vibration-resistant connections in machinery and equipment. The 82° countersink angle and flat head profile allow for perfectly flush installations in countersunk holes, eliminating protrusions that could interfere with moving parts or create safety hazards. With fully threaded design and coarse UNC threading, these screws offer superior pull-out resistance in soft materials and faster installation in production environments.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 3A thread fit for superior tolerance control. Complies with ASME B18.3 specifications for dimensional accuracy and performance requirements. Meets RoHS 3 (2015/863/EU) compliance for restricted hazardous substances and REACH (EC 1907/2006) regulations for chemical safety. Features UNC coarse threads with right-hand direction, 3/16" hex drive configuration, and standardized 82° countersink angle for consistent performance across industrial applications.