S-92451A539 1/4"-20 x 5/8" ASME B18.6.3 Brass Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from high-quality brass material, ideal for humid or corrosive industrial environments.
• Exceptional tensile strength of 50,000 psi ensures reliable, long-lasting fastening under high-stress conditions.
• Class 2A thread fit with UNC coarse threading provides easy installation and secure hold in a wide range of materials.
• 82° countersink angle and flat head design allows for a flush, professional finish, reducing snagging and improving safety.
• Fully threaded shank maximizes grip and load distribution along the entire length for enhanced joint integrity.
• Rockwell B50 hardness offers excellent durability and resistance to wear during repeated use.
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees adherence to strict industry standards and environmental safety regulations.

Professional Applications & Engineering Value

Engineered for precision and reliability, these 1/4"-20 UNC brass flat head slotted screws address common industrial challenges such as corrosion and mechanical failure. The brass construction naturally resists rust and galvanic corrosion, making them ideal for electrical enclosures, marine hardware, and plumbing systems where moisture is a concern. The slotted drive style allows for straightforward installation with standard tools, while the coarse UNC thread ensures quick engagement and strong retention in soft metals or plastics. With a tensile strength of 50,000 psi and Rockwell B50 hardness, these screws maintain integrity in vibration-prone applications, reducing maintenance needs and downtime in assembly lines, machinery, and automotive components.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC thread size with Class 2A thread fit for precise dimensional accuracy and easy assembly. It is manufactured in compliance with ASME B18.6.3 standards, ensuring consistent quality and performance. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industries without hazardous substances.