S-92451A110 4-40 x 1/2" ASME B18.6.3 Brass Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to brass construction, ideal for harsh industrial environments
• Exceptional tensile strength rated at 50,000 psi for reliable performance under high-stress conditions
• Precision Class 2A thread fit ensures smooth installation and secure fastening in UNC coarse threads
• 82° countersink angle provides a flush, professional finish for streamlined assemblies
• Full threading along the 1/2" length offers maximum grip and holding power
• Rockwell B50 hardness delivers excellent durability and resistance to wear
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees quality and environmental safety

Professional Applications & Engineering Value

These 4-40 UNC flat head slotted screws in brass are engineered to address critical challenges in precision assembly and corrosive environments. The combination of 50,000 psi tensile strength and Rockwell B50 hardness ensures they withstand vibrational stresses and repeated use without failure. The fully threaded design and Class 2A thread fit provide consistent engagement, reducing the risk of stripping in coarse thread applications. With an 82° countersink angle, they sit flush to prevent snagging and improve aesthetics in electronics, machinery, and marine equipment. Their RoHS 3 and REACH compliance makes them suitable for regulated industries, offering reliability where material integrity and safety are paramount.

Specification Summary & Compliance

This product adheres to ASME B18.6.3 specifications, with precise Class 2A thread fit for UNC coarse threads. Dimensions include a 1/2" length and standard flat head profile. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and health safety in industrial applications.