S-92451A851 2-56 x 5/16" ASME B18.6.3 Brass Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with brass material, ideal for humid or corrosive industrial environments
• Easy installation and removal with standard slotted drive design requiring only basic tools
• Reliable thread engagement through coarse UNC threading and Class 2A fit for secure fastening
• Flush surface mounting with 82° countersink angle and standard flat head profile
• High mechanical strength delivering 50,000 psi tensile strength for demanding applications
• Consistent performance with Rockwell B50 hardness ensuring durability and wear resistance
• Full thread coverage along the 5/16" length for maximum grip and load distribution

Professional Applications & Engineering Value

These 2-56 UNC flat head slotted brass screws provide exceptional value in electrical enclosures, marine equipment, and precision instruments where corrosion resistance and non-magnetic properties are critical. The coarse thread design ensures rapid installation and superior holding power in soft materials or thin sheet metal, while the 82° countersink angle creates a flush finish that eliminates protrusions in tight spaces. Manufactured from high-quality brass material with Rockwell B50 hardness, these screws maintain structural integrity under vibration and thermal cycling, making them ideal for industrial maintenance, electronic assemblies, and commercial equipment requiring reliable, long-term fastening solutions.

Specification Summary & Compliance

This flat head screw features precise Class 2A thread fit with UNC coarse threading (2-56 size) and fully threaded 5/16" length. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting international environmental and safety standards for industrial use.