S-92451A550 1/4"-20 x 2" ASME B18.6.3 Brass Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from high-quality brass construction, ideal for harsh environments and extended service life
• Exceptional mechanical strength with 50,000 psi tensile strength and Rockwell B50 hardness for reliable load-bearing performance
• Precision thread fit with Class 2A UNC coarse threads ensuring easy installation and secure fastening in various materials
• Optimized flush mounting featuring a standard 82° countersink angle for seamless, professional-grade surface finishes
• Full threading along the 2" length provides maximum grip and adjustment flexibility in deep or variable material thicknesses
• Broad regulatory compliance including ASME B18.6.3, RoHS 3, and REACH, ensuring safety and international acceptability
• Traditional slotted drive design offers compatibility with standard tools for straightforward installation and maintenance

Professional Applications & Engineering Value

These 1/4"-20 UNC brass flat head screws deliver critical performance in applications where corrosion resistance and reliable fastening are paramount. The brass material inherently resists rust and galvanic corrosion, making these slotted screws ideal for electrical components, marine hardware, plumbing systems, and decorative fixtures exposed to moisture or chemicals. The fully threaded design and coarse thread spacing ensure strong holding power in soft materials like wood and plastic, while the 82° countersink angle allows the flat head to sit flush, preventing snagging and providing a clean aesthetic. Engineered to ASME B18.6.3 specifications, they offer consistent quality and dimensional accuracy, reducing the risk of assembly errors and thread stripping in industrial fastener applications.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC thread with a Class 2A thread fit for standard tolerance and easy assembly. Manufacturing and dimensional compliance are guaranteed per the ASME B18.6.3 standard. The product is confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to strict environmental and safety regulations for hazardous substances.