S-97595A307 5/16"-18 x 1" ASME B18.3 Brass Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with brass material, ideal for harsh environments and reducing maintenance costs.
• High tensile strength of 50,000 psi ensures reliable load-bearing capacity and joint integrity in demanding applications.
• Precision Class 3A thread fit provides tight tolerances for secure, vibration-resistant assemblies.
• Hex drive design allows for easy installation with standard tools, minimizing assembly time and effort.
• Standard 82° countersink angle enables flush mounting for a smooth, professional finish.
• Full threading along the 1" length offers maximum grip and adjustment flexibility in various materials.
• Compliance with ASME B18.3, RoHS 3, and REACH ensures quality, safety, and environmental standards are met.

Professional Applications & Engineering Value

This 5/16"-18 UNC brass flat head screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and installation efficiency. The brass material provides excellent resistance to rust and galvanic corrosion, making it suitable for marine, electrical, and plumbing applications where moisture is a concern. With a coarse thread and Class 3A fit, it ensures quick assembly and reliable holding power in soft materials like wood or plastic, reducing the risk of strip-out. The hex drive and flat head design allow for countersunk installations, creating sleek, flush surfaces that enhance safety and aesthetics in machinery, fixtures, and electronic enclosures. Its high tensile strength and Rockwell B55 hardness contribute to long-term durability, minimizing downtime and replacement costs in industrial flat head screw applications.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including UNC coarse threads with a Class 3A thread fit for tight tolerance control. It meets ASME B18.3 specifications for consistency and reliability in manufacturing. Environmental and safety compliance is confirmed through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) adherence, ensuring it is free from hazardous substances. The inch system measurements, such as the 1" length and 82° countersink angle, support global engineering requirements for interoperability and quality assurance.